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Merge branch 'wip/textview' into 'master'

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textview: port GtkTextView to GskPangoRenderer

See merge request GNOME/gtk!1005
This commit is contained in:
Matthias Clasen 2019-07-21 23:10:41 +00:00
commit 980a6a20b1
10 changed files with 668 additions and 1232 deletions
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190
gtk/gskpango.c
View File

@ -23,41 +23,26 @@
#include "gsk/gskrendernodeprivate.h" #include "gsk/gskrendernodeprivate.h"
#include "gskpango.h" #include "gskpango.h"
#include "gtksnapshotprivate.h" #include "gtksnapshotprivate.h"
#include "gtkstylecontextprivate.h"
#include "gtktextlayoutprivate.h"
#include "gtktextviewprivate.h"
#include <math.h> #include <math.h>
#include <pango/pango.h> #include <pango/pango.h>
#include <cairo.h> #include <cairo.h>
#define GSK_PANGO_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GSK_TYPE_PANGO_RENDERER, GskPangoRendererClass))
#define GSK_IS_PANGO_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GSK_TYPE_PANGO_RENDERER))
#define GSK_PANGO_RENDERER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GSK_TYPE_PANGO_RENDERER, GskPangoRendererClass))
/*
* This is a PangoRenderer implementation that translates all the draw calls to
* gsk render nodes, using the GtkSnapshot helper class. Glyphs are translated
* to text nodes, all other draw calls fall back to cairo nodes.
*/
struct _GskPangoRenderer
{
PangoRenderer parent_instance;
GtkSnapshot *snapshot;
GdkRGBA fg_color;
graphene_rect_t bounds;
/* house-keeping options */
gboolean is_cached_renderer;
};
struct _GskPangoRendererClass
{
PangoRendererClass parent_class;
};
G_DEFINE_TYPE (GskPangoRenderer, gsk_pango_renderer, PANGO_TYPE_RENDERER) G_DEFINE_TYPE (GskPangoRenderer, gsk_pango_renderer, PANGO_TYPE_RENDERER)
void
gsk_pango_renderer_set_state (GskPangoRenderer *crenderer,
GskPangoRendererState state)
{
g_return_if_fail (GSK_IS_PANGO_RENDERER (crenderer));
crenderer->state = state;
}
static void static void
get_color (GskPangoRenderer *crenderer, get_color (GskPangoRenderer *crenderer,
PangoRenderPart part, PangoRenderPart part,
@ -158,15 +143,14 @@ gsk_pango_renderer_draw_rectangle (PangoRenderer *renderer,
{ {
GskPangoRenderer *crenderer = (GskPangoRenderer *) (renderer); GskPangoRenderer *crenderer = (GskPangoRenderer *) (renderer);
GdkRGBA rgba; GdkRGBA rgba;
graphene_rect_t bounds;
get_color (crenderer, part, &rgba); get_color (crenderer, part, &rgba);
gtk_snapshot_append_color (crenderer->snapshot,
graphene_rect_init (&bounds, &rgba,
(double)x / PANGO_SCALE, (double)y / PANGO_SCALE, &GRAPHENE_RECT_INIT ((double)x / PANGO_SCALE,
(double)width / PANGO_SCALE, (double)height / PANGO_SCALE); (double)y / PANGO_SCALE,
(double)width / PANGO_SCALE,
gtk_snapshot_append_color (crenderer->snapshot, &rgba, &bounds); (double)height / PANGO_SCALE));
} }
static void static void
@ -336,6 +320,124 @@ gsk_pango_renderer_draw_shape (PangoRenderer *renderer,
cairo_destroy (cr); cairo_destroy (cr);
} }
static void
text_renderer_set_rgba (GskPangoRenderer *crenderer,
PangoRenderPart part,
const GdkRGBA *rgba)
{
PangoRenderer *renderer = PANGO_RENDERER (crenderer);
PangoColor color = { 0, };
guint16 alpha;
if (rgba)
{
color.red = (guint16)(rgba->red * 65535);
color.green = (guint16)(rgba->green * 65535);
color.blue = (guint16)(rgba->blue * 65535);
alpha = (guint16)(rgba->alpha * 65535);
pango_renderer_set_color (renderer, part, &color);
pango_renderer_set_alpha (renderer, part, alpha);
}
else
{
pango_renderer_set_color (renderer, part, NULL);
pango_renderer_set_alpha (renderer, part, 0);
}
}
static GtkTextAppearance *
get_item_appearance (PangoItem *item)
{
GSList *tmp_list = item->analysis.extra_attrs;
while (tmp_list)
{
PangoAttribute *attr = tmp_list->data;
if (attr->klass->type == gtk_text_attr_appearance_type)
return &((GtkTextAttrAppearance *)attr)->appearance;
tmp_list = tmp_list->next;
}
return NULL;
}
static void
gsk_pango_renderer_prepare_run (PangoRenderer *renderer,
PangoLayoutRun *run)
{
GtkStyleContext *context;
GskPangoRenderer *crenderer = GSK_PANGO_RENDERER (renderer);
GdkRGBA *bg_rgba = NULL;
GdkRGBA *fg_rgba = NULL;
GtkTextAppearance *appearance;
PANGO_RENDERER_CLASS (gsk_pango_renderer_parent_class)->prepare_run (renderer, run);
appearance = get_item_appearance (run->item);
if (appearance == NULL)
return;
context = gtk_widget_get_style_context (crenderer->widget);
if (appearance->draw_bg && crenderer->state == GSK_PANGO_RENDERER_NORMAL)
bg_rgba = appearance->bg_rgba;
else
bg_rgba = NULL;
text_renderer_set_rgba (crenderer, PANGO_RENDER_PART_BACKGROUND, bg_rgba);
if (crenderer->state == GSK_PANGO_RENDERER_SELECTED &&
GTK_IS_TEXT_VIEW (crenderer->widget))
{
GtkCssNode *selection_node;
selection_node = gtk_text_view_get_selection_node ((GtkTextView *)crenderer->widget);
gtk_style_context_save_to_node (context, selection_node);
gtk_style_context_get (context,
"color", &fg_rgba,
NULL);
gtk_style_context_restore (context);
}
else if (crenderer->state == GSK_PANGO_RENDERER_CURSOR && gtk_widget_has_focus (crenderer->widget))
{
gtk_style_context_get (context,
"background-color", &fg_rgba,
NULL);
}
else
fg_rgba = appearance->fg_rgba;
text_renderer_set_rgba (crenderer, PANGO_RENDER_PART_FOREGROUND, fg_rgba);
if (appearance->strikethrough_rgba)
text_renderer_set_rgba (crenderer, PANGO_RENDER_PART_STRIKETHROUGH, appearance->strikethrough_rgba);
else
text_renderer_set_rgba (crenderer, PANGO_RENDER_PART_STRIKETHROUGH, fg_rgba);
if (appearance->underline_rgba)
text_renderer_set_rgba (crenderer, PANGO_RENDER_PART_UNDERLINE, appearance->underline_rgba);
else if (appearance->underline == PANGO_UNDERLINE_ERROR)
{
if (!crenderer->error_color)
{
static const GdkRGBA red = { 1, 0, 0, 1 };
crenderer->error_color = gdk_rgba_copy (&red);
}
text_renderer_set_rgba (crenderer, PANGO_RENDER_PART_UNDERLINE, crenderer->error_color);
}
else
text_renderer_set_rgba (crenderer, PANGO_RENDER_PART_UNDERLINE, fg_rgba);
if (fg_rgba != appearance->fg_rgba)
gdk_rgba_free (fg_rgba);
}
static void static void
gsk_pango_renderer_init (GskPangoRenderer *renderer G_GNUC_UNUSED) gsk_pango_renderer_init (GskPangoRenderer *renderer G_GNUC_UNUSED)
{ {
@ -352,13 +454,14 @@ gsk_pango_renderer_class_init (GskPangoRendererClass *klass)
renderer_class->draw_trapezoid = gsk_pango_renderer_draw_trapezoid; renderer_class->draw_trapezoid = gsk_pango_renderer_draw_trapezoid;
renderer_class->draw_error_underline = gsk_pango_renderer_draw_error_underline; renderer_class->draw_error_underline = gsk_pango_renderer_draw_error_underline;
renderer_class->draw_shape = gsk_pango_renderer_draw_shape; renderer_class->draw_shape = gsk_pango_renderer_draw_shape;
renderer_class->prepare_run = gsk_pango_renderer_prepare_run;
} }
static GskPangoRenderer *cached_renderer = NULL; /* MT-safe */ static GskPangoRenderer *cached_renderer = NULL; /* MT-safe */
G_LOCK_DEFINE_STATIC (cached_renderer); G_LOCK_DEFINE_STATIC (cached_renderer);
static GskPangoRenderer * GskPangoRenderer *
acquire_renderer (void) gsk_pango_renderer_acquire (void)
{ {
GskPangoRenderer *renderer; GskPangoRenderer *renderer;
@ -380,13 +483,20 @@ acquire_renderer (void)
return renderer; return renderer;
} }
static void void
release_renderer (GskPangoRenderer *renderer) gsk_pango_renderer_release (GskPangoRenderer *renderer)
{ {
if (G_LIKELY (renderer->is_cached_renderer)) if (G_LIKELY (renderer->is_cached_renderer))
{ {
renderer->widget = NULL;
renderer->snapshot = NULL; renderer->snapshot = NULL;
if (renderer->error_color)
{
gdk_rgba_free (renderer->error_color);
renderer->error_color = NULL;
}
G_UNLOCK (cached_renderer); G_UNLOCK (cached_renderer);
} }
else else
@ -414,7 +524,7 @@ gtk_snapshot_append_layout (GtkSnapshot *snapshot,
g_return_if_fail (snapshot != NULL); g_return_if_fail (snapshot != NULL);
g_return_if_fail (PANGO_IS_LAYOUT (layout)); g_return_if_fail (PANGO_IS_LAYOUT (layout));
crenderer = acquire_renderer (); crenderer = gsk_pango_renderer_acquire ();
crenderer->snapshot = snapshot; crenderer->snapshot = snapshot;
crenderer->fg_color = *color; crenderer->fg_color = *color;
@ -424,5 +534,5 @@ gtk_snapshot_append_layout (GtkSnapshot *snapshot,
pango_renderer_draw_layout (PANGO_RENDERER (crenderer), layout, 0, 0); pango_renderer_draw_layout (PANGO_RENDERER (crenderer), layout, 0, 0);
release_renderer (crenderer); gsk_pango_renderer_release (crenderer);
} }

54
gtk/gskpango.h
View File

@ -24,15 +24,57 @@
G_BEGIN_DECLS G_BEGIN_DECLS
#define GSK_TYPE_PANGO_RENDERER (gsk_pango_renderer_get_type ()) #define GSK_TYPE_PANGO_RENDERER (gsk_pango_renderer_get_type ())
#define GSK_PANGO_RENDERER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GSK_TYPE_PANGO_RENDERER, GskPangoRenderer))
#define GSK_IS_PANGO_RENDERER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GSK_TYPE_PANGO_RENDERER))
#define GSK_PANGO_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GSK_TYPE_PANGO_RENDERER, GskPangoRendererClass))
#define GSK_IS_PANGO_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GSK_TYPE_PANGO_RENDERER))
#define GSK_PANGO_RENDERER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GSK_TYPE_PANGO_RENDERER, GskPangoRendererClass))
#define GSK_PANGO_RENDERER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GSK_TYPE_PANGO_RENDERER, GskPangoRenderer)) typedef struct _GskPangoRenderer GskPangoRenderer;
#define GSK_IS_PANGO_RENDERER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GSK_TYPE_PANGO_RENDERER)) typedef struct _GskPangoRendererClass GskPangoRendererClass;
typedef struct _GskPangoRenderer GskPangoRenderer; typedef enum
typedef struct _GskPangoRendererClass GskPangoRendererClass; {
GSK_PANGO_RENDERER_NORMAL,
GSK_PANGO_RENDERER_SELECTED,
GSK_PANGO_RENDERER_CURSOR
} GskPangoRendererState;
GType gsk_pango_renderer_get_type (void) G_GNUC_CONST; /*
* This is a PangoRenderer implementation that translates all the draw calls to
* gsk render nodes, using the GtkSnapshot helper class. Glyphs are translated
* to text nodes, all other draw calls fall back to cairo nodes.
*/
struct _GskPangoRenderer
{
PangoRenderer parent_instance;
GtkWidget *widget;
GtkSnapshot *snapshot;
GdkRGBA fg_color;
graphene_rect_t bounds;
/* Error underline color for this widget */
GdkRGBA *error_color;
GskPangoRendererState state;
/* house-keeping options */
guint is_cached_renderer : 1;
};
struct _GskPangoRendererClass
{
PangoRendererClass parent_class;
};
GType gsk_pango_renderer_get_type (void) G_GNUC_CONST;
void gsk_pango_renderer_set_state (GskPangoRenderer *crenderer,
GskPangoRendererState state);
GskPangoRenderer *gsk_pango_renderer_acquire (void);
void gsk_pango_renderer_release (GskPangoRenderer *crenderer);
G_END_DECLS G_END_DECLS

932
gtk/gtktextdisplay.c
View File

@ -1,932 +0,0 @@
/* gtktextdisplay.c - display layed-out text
*
* Copyright (c) 1992-1994 The Regents of the University of California.
* Copyright (c) 1994-1997 Sun Microsystems, Inc.
* Copyright (c) 2000 Red Hat, Inc.
* Tk->Gtk port by Havoc Pennington
*
* This file can be used under your choice of two licenses, the LGPL
* and the original Tk license.
*
* LGPL:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.Free
*
* Original Tk license:
*
* This software is copyrighted by the Regents of the University of
* California, Sun Microsystems, Inc., and other parties. The
* following terms apply to all files associated with the software
* unless explicitly disclaimed in individual files.
*
* The authors hereby grant permission to use, copy, modify,
* distribute, and license this software and its documentation for any
* purpose, provided that existing copyright notices are retained in
* all copies and that this notice is included verbatim in any
* distributions. No written agreement, license, or royalty fee is
* required for any of the authorized uses. Modifications to this
* software may be copyrighted by their authors and need not follow
* the licensing terms described here, provided that the new terms are
* clearly indicated on the first page of each file where they apply.
*
* IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY
* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
* DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION,
* OR ANY DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
* NON-INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS,
* AND THE AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE
* MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* GOVERNMENT USE: If you are acquiring this software on behalf of the
* U.S. government, the Government shall have only "Restricted Rights"
* in the software and related documentation as defined in the Federal
* Acquisition Regulations (FARs) in Clause 52.227.19 (c) (2). If you
* are acquiring the software on behalf of the Department of Defense,
* the software shall be classified as "Commercial Computer Software"
* and the Government shall have only "Restricted Rights" as defined
* in Clause 252.227-7013 (c) (1) of DFARs. Notwithstanding the
* foregoing, the authors grant the U.S. Government and others acting
* in its behalf permission to use and distribute the software in
* accordance with the terms specified in this license.
*
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gtktextdisplayprivate.h"
#include "gtktextviewprivate.h"
#include "gtkwidgetprivate.h"
#include "gtkstylecontextprivate.h"
#include "gtkintl.h"
#include <gdk/gdktextureprivate.h>
#define GTK_TYPE_TEXT_RENDERER (_gtk_text_renderer_get_type())
#define GTK_TEXT_RENDERER(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GTK_TYPE_TEXT_RENDERER, GtkTextRenderer))
#define GTK_IS_TEXT_RENDERER(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GTK_TYPE_TEXT_RENDERER))
#define GTK_TEXT_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_TEXT_RENDERER, GtkTextRendererClass))
#define GTK_IS_TEXT_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_TEXT_RENDERER))
#define GTK_TEXT_RENDERER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_TEXT_RENDERER, GtkTextRendererClass))
typedef struct _GtkTextRenderer GtkTextRenderer;
typedef struct _GtkTextRendererClass GtkTextRendererClass;
enum {
NORMAL,
SELECTED,
CURSOR
};
struct _GtkTextRenderer
{
PangoRenderer parent_instance;
GtkWidget *widget;
cairo_t *cr;
GdkRGBA *error_color; /* Error underline color for this widget */
GList *widgets; /* widgets encountered when drawing */
guint state : 2;
};
struct _GtkTextRendererClass
{
PangoRendererClass parent_class;
};
GType _gtk_text_renderer_get_type (void);
G_DEFINE_TYPE (GtkTextRenderer, _gtk_text_renderer, PANGO_TYPE_RENDERER)
static void
text_renderer_set_rgba (GtkTextRenderer *text_renderer,
PangoRenderPart part,
const GdkRGBA *rgba)
{
PangoRenderer *renderer = PANGO_RENDERER (text_renderer);
PangoColor color = { 0, };
guint16 alpha;
if (rgba)
{
color.red = (guint16)(rgba->red * 65535);
color.green = (guint16)(rgba->green * 65535);
color.blue = (guint16)(rgba->blue * 65535);
alpha = (guint16)(rgba->alpha * 65535);
pango_renderer_set_color (renderer, part, &color);
pango_renderer_set_alpha (renderer, part, alpha);
}
else
{
pango_renderer_set_color (renderer, part, NULL);
pango_renderer_set_alpha (renderer, part, 0);
}
}
static GtkTextAppearance *
get_item_appearance (PangoItem *item)
{
GSList *tmp_list = item->analysis.extra_attrs;
while (tmp_list)
{
PangoAttribute *attr = tmp_list->data;
if (attr->klass->type == gtk_text_attr_appearance_type)
return &((GtkTextAttrAppearance *)attr)->appearance;
tmp_list = tmp_list->next;
}
return NULL;
}
static void
gtk_text_renderer_prepare_run (PangoRenderer *renderer,
PangoLayoutRun *run)
{
GtkStyleContext *context;
GtkTextRenderer *text_renderer = GTK_TEXT_RENDERER (renderer);
GdkRGBA *bg_rgba = NULL;
GdkRGBA *fg_rgba = NULL;
GtkTextAppearance *appearance;
PANGO_RENDERER_CLASS (_gtk_text_renderer_parent_class)->prepare_run (renderer, run);
appearance = get_item_appearance (run->item);
g_assert (appearance != NULL);
context = gtk_widget_get_style_context (text_renderer->widget);
if (appearance->draw_bg && text_renderer->state == NORMAL)
bg_rgba = appearance->bg_rgba;
else
bg_rgba = NULL;
text_renderer_set_rgba (text_renderer, PANGO_RENDER_PART_BACKGROUND, bg_rgba);
if (text_renderer->state == SELECTED)
{
GtkCssNode *selection_node;
selection_node = gtk_text_view_get_selection_node ((GtkTextView *)text_renderer->widget);
gtk_style_context_save_to_node (context, selection_node);
gtk_style_context_get (context,
"color", &fg_rgba,
NULL);
gtk_style_context_restore (context);
}
else if (text_renderer->state == CURSOR && gtk_widget_has_focus (text_renderer->widget))
{
gtk_style_context_get (context,
"background-color", &fg_rgba,
NULL);
}
else
fg_rgba = appearance->fg_rgba;
text_renderer_set_rgba (text_renderer, PANGO_RENDER_PART_FOREGROUND, fg_rgba);
if (appearance->strikethrough_rgba)
text_renderer_set_rgba (text_renderer, PANGO_RENDER_PART_STRIKETHROUGH, appearance->strikethrough_rgba);
else
text_renderer_set_rgba (text_renderer, PANGO_RENDER_PART_STRIKETHROUGH, fg_rgba);
if (appearance->underline_rgba)
text_renderer_set_rgba (text_renderer, PANGO_RENDER_PART_UNDERLINE, appearance->underline_rgba);
else if (appearance->underline == PANGO_UNDERLINE_ERROR)
{
if (!text_renderer->error_color)
{
static const GdkRGBA red = { 1, 0, 0, 1 };
text_renderer->error_color = gdk_rgba_copy (&red);
}
text_renderer_set_rgba (text_renderer, PANGO_RENDER_PART_UNDERLINE, text_renderer->error_color);
}
else
text_renderer_set_rgba (text_renderer, PANGO_RENDER_PART_UNDERLINE, fg_rgba);
if (fg_rgba != appearance->fg_rgba)
gdk_rgba_free (fg_rgba);
}
static void
set_color (GtkTextRenderer *text_renderer,
PangoRenderPart part)
{
PangoColor *color;
GdkRGBA rgba;
guint16 alpha;
cairo_save (text_renderer->cr);
color = pango_renderer_get_color (PANGO_RENDERER (text_renderer), part);
alpha = pango_renderer_get_alpha (PANGO_RENDERER (text_renderer), part);
if (color)
{
rgba.red = color->red / 65535.;
rgba.green = color->green / 65535.;
rgba.blue = color->blue / 65535.;
rgba.alpha = alpha / 65535.;
gdk_cairo_set_source_rgba (text_renderer->cr, &rgba);
}
}
static void
unset_color (GtkTextRenderer *text_renderer)
{
cairo_restore (text_renderer->cr);
}
static void
gtk_text_renderer_draw_glyphs (PangoRenderer *renderer,
PangoFont *font,
PangoGlyphString *glyphs,
int x,
int y)
{
GtkTextRenderer *text_renderer = GTK_TEXT_RENDERER (renderer);
set_color (text_renderer, PANGO_RENDER_PART_FOREGROUND);
cairo_move_to (text_renderer->cr, (double)x / PANGO_SCALE, (double)y / PANGO_SCALE);
pango_cairo_show_glyph_string (text_renderer->cr, font, glyphs);
unset_color (text_renderer);
}
static void
gtk_text_renderer_draw_glyph_item (PangoRenderer *renderer,
const char *text,
PangoGlyphItem *glyph_item,
int x,
int y)
{
GtkTextRenderer *text_renderer = GTK_TEXT_RENDERER (renderer);
set_color (text_renderer, PANGO_RENDER_PART_FOREGROUND);
cairo_move_to (text_renderer->cr, (double)x / PANGO_SCALE, (double)y / PANGO_SCALE);
pango_cairo_show_glyph_item (text_renderer->cr, text, glyph_item);
unset_color (text_renderer);
}
static void
gtk_text_renderer_draw_rectangle (PangoRenderer *renderer,
PangoRenderPart part,
int x,
int y,
int width,
int height)
{
GtkTextRenderer *text_renderer = GTK_TEXT_RENDERER (renderer);
set_color (text_renderer, part);
cairo_rectangle (text_renderer->cr,
(double)x / PANGO_SCALE, (double)y / PANGO_SCALE,
(double)width / PANGO_SCALE, (double)height / PANGO_SCALE);
cairo_fill (text_renderer->cr);
unset_color (text_renderer);
}
static void
gtk_text_renderer_draw_trapezoid (PangoRenderer *renderer,
PangoRenderPart part,
double y1_,
double x11,
double x21,
double y2,
double x12,
double x22)
{
GtkTextRenderer *text_renderer = GTK_TEXT_RENDERER (renderer);
cairo_t *cr;
cairo_matrix_t matrix;
set_color (text_renderer, part);
cr = text_renderer->cr;
cairo_get_matrix (cr, &matrix);
matrix.xx = matrix.yy = 1.0;
matrix.xy = matrix.yx = 0.0;
cairo_set_matrix (cr, &matrix);
cairo_move_to (cr, x11, y1_);
cairo_line_to (cr, x21, y1_);
cairo_line_to (cr, x22, y2);
cairo_line_to (cr, x12, y2);
cairo_close_path (cr);
cairo_fill (cr);
unset_color (text_renderer);
}
static void
gtk_text_renderer_draw_error_underline (PangoRenderer *renderer,
int x,
int y,
int width,
int height)
{
GtkTextRenderer *text_renderer = GTK_TEXT_RENDERER (renderer);
set_color (text_renderer, PANGO_RENDER_PART_UNDERLINE);
pango_cairo_show_error_underline (text_renderer->cr,
(double)x / PANGO_SCALE, (double)y / PANGO_SCALE,
(double)width / PANGO_SCALE, (double)height / PANGO_SCALE);
unset_color (text_renderer);
}
static void
gtk_text_renderer_draw_shape (PangoRenderer *renderer,
PangoAttrShape *attr,
int x,
int y)
{
GtkTextRenderer *text_renderer = GTK_TEXT_RENDERER (renderer);
if (attr->data == NULL)
{
/* This happens if we have an empty widget anchor. Draw
* something empty-looking.
*/
GdkRectangle shape_rect;
cairo_t *cr;
shape_rect.x = PANGO_PIXELS (x);
shape_rect.y = PANGO_PIXELS (y + attr->logical_rect.y);
shape_rect.width = PANGO_PIXELS (x + attr->logical_rect.width) - shape_rect.x;
shape_rect.height = PANGO_PIXELS (y + attr->logical_rect.y + attr->logical_rect.height) - shape_rect.y;
set_color (text_renderer, PANGO_RENDER_PART_FOREGROUND);
cr = text_renderer->cr;
cairo_set_line_width (cr, 1.0);
cairo_rectangle (cr,
shape_rect.x + 0.5, shape_rect.y + 0.5,
shape_rect.width - 1, shape_rect.height - 1);
cairo_move_to (cr, shape_rect.x + 0.5, shape_rect.y + 0.5);
cairo_line_to (cr,
shape_rect.x + shape_rect.width - 0.5,
shape_rect.y + shape_rect.height - 0.5);
cairo_move_to (cr, shape_rect.x + 0.5,
shape_rect.y + shape_rect.height - 0.5);
cairo_line_to (cr, shape_rect.x + shape_rect.width - 0.5,
shape_rect.y + 0.5);
cairo_stroke (cr);
unset_color (text_renderer);
}
else if (GDK_IS_TEXTURE (attr->data))
{
cairo_t *cr = text_renderer->cr;
GdkTexture *texture = GDK_TEXTURE (attr->data);
cairo_surface_t *surface;
surface = gdk_texture_download_surface (texture);
cairo_save (cr);
cairo_set_source_surface (cr, surface,
PANGO_PIXELS (x),
PANGO_PIXELS (y) - gdk_texture_get_height (texture));
cairo_paint (cr);
cairo_restore (cr);
cairo_surface_destroy (surface);
}
else if (GTK_IS_WIDGET (attr->data))
{
GtkWidget *widget;
widget = GTK_WIDGET (attr->data);
text_renderer->widgets = g_list_prepend (text_renderer->widgets,
g_object_ref (widget));
}
else
g_assert_not_reached (); /* not a texture or widget */
}
static void
gtk_text_renderer_finalize (GObject *object)
{
G_OBJECT_CLASS (_gtk_text_renderer_parent_class)->finalize (object);
}
static void
_gtk_text_renderer_init (GtkTextRenderer *renderer)
{
}
static void
_gtk_text_renderer_class_init (GtkTextRendererClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
PangoRendererClass *renderer_class = PANGO_RENDERER_CLASS (klass);
renderer_class->prepare_run = gtk_text_renderer_prepare_run;
renderer_class->draw_glyphs = gtk_text_renderer_draw_glyphs;
renderer_class->draw_glyph_item = gtk_text_renderer_draw_glyph_item;
renderer_class->draw_rectangle = gtk_text_renderer_draw_rectangle;
renderer_class->draw_trapezoid = gtk_text_renderer_draw_trapezoid;
renderer_class->draw_error_underline = gtk_text_renderer_draw_error_underline;
renderer_class->draw_shape = gtk_text_renderer_draw_shape;
object_class->finalize = gtk_text_renderer_finalize;
}
static void
text_renderer_set_state (GtkTextRenderer *text_renderer,
int state)
{
text_renderer->state = state;
}
static void
text_renderer_begin (GtkTextRenderer *text_renderer,
GtkWidget *widget,
cairo_t *cr)
{
GtkStyleContext *context;
GdkRGBA color;
GtkCssNode *text_node;
text_renderer->widget = widget;
text_renderer->cr = cr;
context = gtk_widget_get_style_context (widget);
text_node = gtk_text_view_get_text_node ((GtkTextView *)widget);
gtk_style_context_save_to_node (context, text_node);
gtk_style_context_get_color (context, &color);
cairo_save (cr);
gdk_cairo_set_source_rgba (cr, &color);
}
/* Returns a GSList of (referenced) widgets encountered while drawing.
*/
static void
text_renderer_end (GtkTextRenderer *text_renderer)
{
GtkStyleContext *context;
cairo_restore (text_renderer->cr);
context = gtk_widget_get_style_context (text_renderer->widget);
gtk_style_context_restore (context);
text_renderer->widget = NULL;
text_renderer->cr = NULL;
if (text_renderer->error_color)
{
gdk_rgba_free (text_renderer->error_color);
text_renderer->error_color = NULL;
}
}
static cairo_region_t *
get_selected_clip (GtkTextRenderer *text_renderer,
PangoLayout *layout,
PangoLayoutLine *line,
int x,
int y,
int height,
int start_index,
int end_index)
{
gint *ranges;
gint n_ranges, i;
cairo_region_t *clip_region = cairo_region_create ();
pango_layout_line_get_x_ranges (line, start_index, end_index, &ranges, &n_ranges);
for (i=0; i < n_ranges; i++)
{
GdkRectangle rect;
rect.x = x + PANGO_PIXELS (ranges[2*i]);
rect.y = y;
rect.width = PANGO_PIXELS (ranges[2*i + 1]) - PANGO_PIXELS (ranges[2*i]);
rect.height = height;
cairo_region_union_rectangle (clip_region, &rect);
}
g_free (ranges);
return clip_region;
}
static void
render_para (GtkTextRenderer *text_renderer,
GtkTextLineDisplay *line_display,
int selection_start_index,
int selection_end_index)
{
GtkStyleContext *context;
PangoLayout *layout = line_display->layout;
int byte_offset = 0;
PangoLayoutIter *iter;
int screen_width;
GdkRGBA *selection;
gboolean first = TRUE;
GtkCssNode *selection_node;
iter = pango_layout_get_iter (layout);
screen_width = line_display->total_width;
context = gtk_widget_get_style_context (text_renderer->widget);
selection_node = gtk_text_view_get_selection_node ((GtkTextView*)text_renderer->widget);
gtk_style_context_save_to_node (context, selection_node);
gtk_style_context_get (context, "background-color", &selection, NULL);
gtk_style_context_restore (context);
do
{
PangoLayoutLine *line = pango_layout_iter_get_line_readonly (iter);
int selection_y, selection_height;
int first_y, last_y;
PangoRectangle line_rect;
int baseline;
gboolean at_last_line;
pango_layout_iter_get_line_extents (iter, NULL, &line_rect);
baseline = pango_layout_iter_get_baseline (iter);
pango_layout_iter_get_line_yrange (iter, &first_y, &last_y);
/* Adjust for margins */
line_rect.x += line_display->x_offset * PANGO_SCALE;
line_rect.y += line_display->top_margin * PANGO_SCALE;
baseline += line_display->top_margin * PANGO_SCALE;
/* Selection is the height of the line, plus top/bottom
* margin if we're the first/last line
*/
selection_y = PANGO_PIXELS (first_y) + line_display->top_margin;
selection_height = PANGO_PIXELS (last_y) - PANGO_PIXELS (first_y);
if (first)
{
selection_y -= line_display->top_margin;
selection_height += line_display->top_margin;
}
at_last_line = pango_layout_iter_at_last_line (iter);
if (at_last_line)
selection_height += line_display->bottom_margin;
first = FALSE;
if (selection_start_index < byte_offset &&
selection_end_index > line->length + byte_offset) /* All selected */
{
cairo_t *cr = text_renderer->cr;
cairo_save (cr);
gdk_cairo_set_source_rgba (cr, selection);
cairo_rectangle (cr,
line_display->left_margin, selection_y,
screen_width, selection_height);
cairo_fill (cr);
cairo_restore(cr);
text_renderer_set_state (text_renderer, SELECTED);
pango_renderer_draw_layout_line (PANGO_RENDERER (text_renderer),
line,
line_rect.x,
baseline);
}
else
{
if (line_display->pg_bg_rgba_set)
{
cairo_t *cr = text_renderer->cr;
cairo_save (cr);
gdk_cairo_set_source_rgba (text_renderer->cr, &line_display->pg_bg_rgba);
cairo_rectangle (cr,
line_display->left_margin, selection_y,
screen_width, selection_height);
cairo_fill (cr);
cairo_restore (cr);
}
text_renderer_set_state (text_renderer, NORMAL);
pango_renderer_draw_layout_line (PANGO_RENDERER (text_renderer),
line,
line_rect.x,
baseline);
/* Check if some part of the line is selected; the newline
* that is after line->length for the last line of the
* paragraph counts as part of the line for this
*/
if ((selection_start_index < byte_offset + line->length ||
(selection_start_index == byte_offset + line->length && pango_layout_iter_at_last_line (iter))) &&
selection_end_index > byte_offset)
{
cairo_t *cr = text_renderer->cr;
cairo_region_t *clip_region = get_selected_clip (text_renderer, layout, line,
line_display->x_offset,
selection_y,
selection_height,
selection_start_index, selection_end_index);
cairo_save (cr);
gdk_cairo_region (cr, clip_region);
cairo_clip (cr);
cairo_region_destroy (clip_region);
gdk_cairo_set_source_rgba (cr, selection);
cairo_rectangle (cr,
PANGO_PIXELS (line_rect.x),
selection_y,
PANGO_PIXELS (line_rect.width),
selection_height);
cairo_fill (cr);
text_renderer_set_state (text_renderer, SELECTED);
pango_renderer_draw_layout_line (PANGO_RENDERER (text_renderer),
line,
line_rect.x,
baseline);
cairo_restore (cr);
/* Paint in the ends of the line */
if (line_rect.x > line_display->left_margin * PANGO_SCALE &&
((line_display->direction == GTK_TEXT_DIR_LTR && selection_start_index < byte_offset) ||
(line_display->direction == GTK_TEXT_DIR_RTL && selection_end_index > byte_offset + line->length)))
{
cairo_save (cr);
gdk_cairo_set_source_rgba (cr, selection);
cairo_rectangle (cr,
line_display->left_margin,
selection_y,
PANGO_PIXELS (line_rect.x) - line_display->left_margin,
selection_height);
cairo_fill (cr);
cairo_restore (cr);
}
if (line_rect.x + line_rect.width <
(screen_width + line_display->left_margin) * PANGO_SCALE &&
((line_display->direction == GTK_TEXT_DIR_LTR && selection_end_index > byte_offset + line->length) ||
(line_display->direction == GTK_TEXT_DIR_RTL && selection_start_index < byte_offset)))
{
int nonlayout_width;
nonlayout_width =
line_display->left_margin + screen_width -
PANGO_PIXELS (line_rect.x) - PANGO_PIXELS (line_rect.width);
cairo_save (cr);
gdk_cairo_set_source_rgba (cr, selection);
cairo_rectangle (cr,
PANGO_PIXELS (line_rect.x) + PANGO_PIXELS (line_rect.width),
selection_y,
nonlayout_width,
selection_height);
cairo_fill (cr);
cairo_restore (cr);
}
}
else if (line_display->has_block_cursor &&
gtk_widget_has_focus (text_renderer->widget) &&
byte_offset <= line_display->insert_index &&
(line_display->insert_index < byte_offset + line->length ||
(at_last_line && line_display->insert_index == byte_offset + line->length)))
{
GdkRectangle cursor_rect;
GdkRGBA cursor_color;
cairo_t *cr = text_renderer->cr;
/* we draw text using base color on filled cursor rectangle of cursor color
* (normally white on black) */
_gtk_style_context_get_cursor_color (context, &cursor_color, NULL);
cursor_rect.x = line_display->x_offset + line_display->block_cursor.x;
cursor_rect.y = line_display->block_cursor.y + line_display->top_margin;
cursor_rect.width = line_display->block_cursor.width;
cursor_rect.height = line_display->block_cursor.height;
cairo_save (cr);
gdk_cairo_rectangle (cr, &cursor_rect);
cairo_clip (cr);
gdk_cairo_set_source_rgba (cr, &cursor_color);
cairo_paint (cr);
/* draw text under the cursor if any */
if (!line_display->cursor_at_line_end)
{
GdkRGBA *color;
gtk_style_context_get (context, "background-color", &color, NULL);
gdk_cairo_set_source_rgba (cr, color);
text_renderer_set_state (text_renderer, CURSOR);
pango_renderer_draw_layout_line (PANGO_RENDERER (text_renderer),
line,
line_rect.x,
baseline);
gdk_rgba_free (color);
}
cairo_restore (cr);
}
}
byte_offset += line->length;
}
while (pango_layout_iter_next_line (iter));
gdk_rgba_free (selection);
pango_layout_iter_free (iter);
}
static GtkTextRenderer *
get_text_renderer (void)
{
static GtkTextRenderer *text_renderer = NULL;
if (!text_renderer)
text_renderer = g_object_new (GTK_TYPE_TEXT_RENDERER, NULL);
return text_renderer;
}
void
gtk_text_layout_snapshot (GtkTextLayout *layout,
GtkWidget *widget,
GtkSnapshot *snapshot,
const GdkRectangle *clip)
{
GtkStyleContext *context;
gint offset_y;
GtkTextRenderer *text_renderer;
GtkTextIter selection_start, selection_end;
gboolean have_selection;
GSList *line_list;
GSList *tmp_list;
cairo_t *cr;
g_return_if_fail (GTK_IS_TEXT_LAYOUT (layout));
g_return_if_fail (layout->default_style != NULL);
g_return_if_fail (layout->buffer != NULL);
g_return_if_fail (snapshot != NULL);
context = gtk_widget_get_style_context (widget);
line_list = gtk_text_layout_get_lines (layout, clip->y, clip->y + clip->height, &offset_y);
if (line_list == NULL)
return; /* nothing on the screen */
cr = gtk_snapshot_append_cairo (snapshot,
&GRAPHENE_RECT_INIT(clip->x, clip->y, clip->width, clip->height));
text_renderer = get_text_renderer ();
text_renderer_begin (text_renderer, widget, cr);
/* text_renderer_begin/end does cairo_save/restore */
cairo_translate (cr, 0, offset_y);
gtk_text_layout_wrap_loop_start (layout);
have_selection = gtk_text_buffer_get_selection_bounds (layout->buffer,
&selection_start,
&selection_end);
tmp_list = line_list;
while (tmp_list != NULL)
{
GtkTextLineDisplay *line_display;
gint selection_start_index = -1;
gint selection_end_index = -1;
GtkTextLine *line = tmp_list->data;
line_display = gtk_text_layout_get_line_display (layout, line, FALSE);
if (line_display->height > 0)
{
g_assert (line_display->layout != NULL);
if (have_selection)
{
GtkTextIter line_start, line_end;
gint byte_count;
gtk_text_layout_get_iter_at_line (layout,
&line_start,
line, 0);
line_end = line_start;
if (!gtk_text_iter_ends_line (&line_end))
gtk_text_iter_forward_to_line_end (&line_end);
byte_count = gtk_text_iter_get_visible_line_index (&line_end);
if (gtk_text_iter_compare (&selection_start, &line_end) <= 0 &&
gtk_text_iter_compare (&selection_end, &line_start) >= 0)
{
if (gtk_text_iter_compare (&selection_start, &line_start) >= 0)
selection_start_index = gtk_text_iter_get_visible_line_index (&selection_start);
else
selection_start_index = -1;
if (gtk_text_iter_compare (&selection_end, &line_end) <= 0)
selection_end_index = gtk_text_iter_get_visible_line_index (&selection_end);
else
selection_end_index = byte_count + 1; /* + 1 to flag past-the-end */
}
}
render_para (text_renderer, line_display,
selection_start_index, selection_end_index);
/* We paint the cursors last, because they overlap another chunk
* and need to appear on top.
*/
if (line_display->cursors != NULL)
{
int i;
for (i = 0; i < line_display->cursors->len; i++)
{
int index;
PangoDirection dir;
index = g_array_index(line_display->cursors, int, i);
dir = (line_display->direction == GTK_TEXT_DIR_RTL) ? PANGO_DIRECTION_RTL : PANGO_DIRECTION_LTR;
gtk_render_insertion_cursor (context, cr,
line_display->x_offset, line_display->top_margin,
line_display->layout, index, dir);
}
}
} /* line_display->height > 0 */
cairo_translate (cr, 0, line_display->height);
gtk_text_layout_free_line_display (layout, line_display);
tmp_list = tmp_list->next;
}
gtk_text_layout_wrap_loop_end (layout);
text_renderer_end (text_renderer);
g_slist_free (line_list);
cairo_destroy (cr);
}

101
gtk/gtktextdisplayprivate.h
View File

@ -1,101 +0,0 @@
/* gtktextdisplay.c - display layed-out text
*
* Copyright (c) 1992-1994 The Regents of the University of California.
* Copyright (c) 1994-1997 Sun Microsystems, Inc.
* Copyright (c) 2000 Red Hat, Inc.
* Tk->Gtk port by Havoc Pennington
*
* This file can be used under your choice of two licenses, the LGPL
* and the original Tk license.
*
* LGPL:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Original Tk license:
*
* This software is copyrighted by the Regents of the University of
* California, Sun Microsystems, Inc., and other parties. The
* following terms apply to all files associated with the software
* unless explicitly disclaimed in individual files.
*
* The authors hereby grant permission to use, copy, modify,
* distribute, and license this software and its documentation for any
* purpose, provided that existing copyright notices are retained in
* all copies and that this notice is included verbatim in any
* distributions. No written agreement, license, or royalty fee is
* required for any of the authorized uses. Modifications to this
* software may be copyrighted by their authors and need not follow
* the licensing terms described here, provided that the new terms are
* clearly indicated on the first page of each file where they apply.
*
* IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY
* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
* DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION,
* OR ANY DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
* NON-INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS,
* AND THE AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE
* MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* GOVERNMENT USE: If you are acquiring this software on behalf of the
* U.S. government, the Government shall have only "Restricted Rights"
* in the software and related documentation as defined in the Federal
* Acquisition Regulations (FARs) in Clause 52.227.19 (c) (2). If you
* are acquiring the software on behalf of the Department of Defense,
* the software shall be classified as "Commercial Computer Software"
* and the Government shall have only "Restricted Rights" as defined
* in Clause 252.227-7013 (c) (1) of DFARs. Notwithstanding the
* foregoing, the authors grant the U.S. Government and others acting
* in its behalf permission to use and distribute the software in
* accordance with the terms specified in this license.
*
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#ifndef __GTK_TEXT_DISPLAY_PRIVATE_H__
#define __GTK_TEXT_DISPLAY_PRIVATE_H__
#include "gtktextlayoutprivate.h"
G_BEGIN_DECLS
/* A semi-public header intended for use by code that also
* uses GtkTextLayout
*/
/* The drawable should be pre-initialized to your preferred background.
* widget - Widget to grab some style info from
* snapshot - Snapshot to render to, matrix set so that (0, 0)
* is the top left of the layout
* clip - visible area
*/
void gtk_text_layout_snapshot (GtkTextLayout *layout,
GtkWidget *widget,
GtkSnapshot *snapshot,
const GdkRectangle *clip);
G_END_DECLS
#endif /* __GTK_TEXT_DISPLAY_PRIVATE_H__ */

345
gtk/gtktextlayout.c
View File

@ -77,12 +77,16 @@
#include "config.h" #include "config.h"
#include "gtkmarshalers.h" #include "gtkmarshalers.h"
#include "gtkstylecontextprivate.h"
#include "gtktextlayoutprivate.h" #include "gtktextlayoutprivate.h"
#include "gtktextbtree.h" #include "gtktextbtree.h"
#include "gtktextbufferprivate.h" #include "gtktextbufferprivate.h"
#include "gtktextiterprivate.h" #include "gtktextiterprivate.h"
#include "gtktextutil.h" #include "gtktextutil.h"
#include "gskpango.h"
#include "gtkintl.h" #include "gtkintl.h"
#include "gtkwidgetprivate.h"
#include "gtktextviewprivate.h"
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
@ -3785,3 +3789,344 @@ gtk_text_layout_buffer_delete_range (GtkTextBuffer *textbuffer,
gtk_text_layout_update_cursor_line (layout); gtk_text_layout_update_cursor_line (layout);
} }
static void
render_para (GskPangoRenderer *crenderer,
int offset_y,
GtkTextLineDisplay *line_display,
int selection_start_index,
int selection_end_index,
float cursor_alpha)
{
GtkStyleContext *context;
PangoLayout *layout = line_display->layout;
int byte_offset = 0;
PangoLayoutIter *iter;
int screen_width;
GdkRGBA *selection;
gboolean first = TRUE;
GtkCssNode *selection_node;
graphene_point_t point = { 0, offset_y };
g_return_if_fail (GTK_IS_TEXT_VIEW (crenderer->widget));
iter = pango_layout_get_iter (layout);
screen_width = line_display->total_width;
context = gtk_widget_get_style_context (crenderer->widget);
selection_node = gtk_text_view_get_selection_node ((GtkTextView*)crenderer->widget);
gtk_style_context_save_to_node (context, selection_node);
gtk_style_context_get (context, "background-color", &selection, NULL);
gtk_style_context_restore (context);
gtk_snapshot_save (crenderer->snapshot);
gtk_snapshot_translate (crenderer->snapshot, &point);
do
{
PangoLayoutLine *line = pango_layout_iter_get_line_readonly (iter);
int selection_y, selection_height;
int first_y, last_y;
PangoRectangle line_rect;
int baseline;
gboolean at_last_line;
pango_layout_iter_get_line_extents (iter, NULL, &line_rect);
baseline = pango_layout_iter_get_baseline (iter);
pango_layout_iter_get_line_yrange (iter, &first_y, &last_y);
/* Adjust for margins */
line_rect.x += line_display->x_offset * PANGO_SCALE;
line_rect.y += line_display->top_margin * PANGO_SCALE;
baseline += line_display->top_margin * PANGO_SCALE;
/* Selection is the height of the line, plus top/bottom
* margin if we're the first/last line
*/
selection_y = PANGO_PIXELS (first_y) + line_display->top_margin;
selection_height = PANGO_PIXELS (last_y) - PANGO_PIXELS (first_y);
if (first)
{
selection_y -= line_display->top_margin;
selection_height += line_display->top_margin;
}
at_last_line = pango_layout_iter_at_last_line (iter);
if (at_last_line)
selection_height += line_display->bottom_margin;
first = FALSE;
if (selection_start_index < byte_offset &&
selection_end_index > line->length + byte_offset) /* All selected */
{
gtk_snapshot_append_color (crenderer->snapshot,
selection,
&GRAPHENE_RECT_INIT (line_display->left_margin,
selection_y,
screen_width,
selection_height));
gsk_pango_renderer_set_state (crenderer, GSK_PANGO_RENDERER_SELECTED);
pango_renderer_draw_layout_line (PANGO_RENDERER (crenderer),
line,
line_rect.x,
baseline);
}
else
{
if (line_display->pg_bg_rgba_set)
gtk_snapshot_append_color (crenderer->snapshot,
&line_display->pg_bg_rgba,
&GRAPHENE_RECT_INIT (line_display->left_margin,
selection_y,
screen_width,
selection_height));
gsk_pango_renderer_set_state (crenderer, GSK_PANGO_RENDERER_NORMAL);
pango_renderer_draw_layout_line (PANGO_RENDERER (crenderer),
line,
line_rect.x,
baseline);
/* Check if some part of the line is selected; the newline
* that is after line->length for the last line of the
* paragraph counts as part of the line for this
*/
if ((selection_start_index < byte_offset + line->length ||
(selection_start_index == byte_offset + line->length && pango_layout_iter_at_last_line (iter))) &&
selection_end_index > byte_offset)
{
gint *ranges = NULL;
gint n_ranges, i;
pango_layout_line_get_x_ranges (line, selection_start_index, selection_end_index, &ranges, &n_ranges);
gsk_pango_renderer_set_state (crenderer, GSK_PANGO_RENDERER_SELECTED);
for (i = 0; i < n_ranges; i++)
{
graphene_rect_t bounds;
bounds.origin.x = line_display->x_offset + PANGO_PIXELS (ranges[2*i]);
bounds.origin.y = selection_y;
bounds.size.width = PANGO_PIXELS (ranges[2*i + 1]) - PANGO_PIXELS (ranges[2*i]);
bounds.size.height = selection_height;
gtk_snapshot_append_color (crenderer->snapshot, selection, &bounds);
gtk_snapshot_push_clip (crenderer->snapshot, &bounds);
pango_renderer_draw_layout_line (PANGO_RENDERER (crenderer),
line,
line_rect.x,
baseline);
gtk_snapshot_pop (crenderer->snapshot);
}
g_free (ranges);
/* Paint in the ends of the line */
if (line_rect.x > line_display->left_margin * PANGO_SCALE &&
((line_display->direction == GTK_TEXT_DIR_LTR && selection_start_index < byte_offset) ||
(line_display->direction == GTK_TEXT_DIR_RTL && selection_end_index > byte_offset + line->length)))
gtk_snapshot_append_color (crenderer->snapshot,
selection,
&GRAPHENE_RECT_INIT (line_display->left_margin,
selection_y,
PANGO_PIXELS (line_rect.x) - line_display->left_margin,
selection_height));
if (line_rect.x + line_rect.width <
(screen_width + line_display->left_margin) * PANGO_SCALE &&
((line_display->direction == GTK_TEXT_DIR_LTR && selection_end_index > byte_offset + line->length) ||
(line_display->direction == GTK_TEXT_DIR_RTL && selection_start_index < byte_offset)))
{
int nonlayout_width = line_display->left_margin
+ screen_width
- PANGO_PIXELS (line_rect.x)
- PANGO_PIXELS (line_rect.width);
gtk_snapshot_append_color (crenderer->snapshot,
selection,
&GRAPHENE_RECT_INIT (PANGO_PIXELS (line_rect.x) + PANGO_PIXELS (line_rect.width),
selection_y,
nonlayout_width,
selection_height));
}
}
else if (line_display->has_block_cursor &&
gtk_widget_has_focus (crenderer->widget) &&
byte_offset <= line_display->insert_index &&
(line_display->insert_index < byte_offset + line->length ||
(at_last_line && line_display->insert_index == byte_offset + line->length)))
{
GdkRGBA cursor_color;
graphene_rect_t bounds = {
.origin.x = line_display->x_offset + line_display->block_cursor.x,
.origin.y = line_display->block_cursor.y + line_display->top_margin,
.size.width = line_display->block_cursor.width,
.size.height = line_display->block_cursor.height,
};
/* we draw text using base color on filled cursor rectangle of cursor color
* (normally white on black) */
_gtk_style_context_get_cursor_color (context, &cursor_color, NULL);
gtk_snapshot_push_opacity (crenderer->snapshot, cursor_alpha);
gtk_snapshot_append_color (crenderer->snapshot, &cursor_color, &bounds);
/* draw text under the cursor if any */
if (!line_display->cursor_at_line_end)
{
gsk_pango_renderer_set_state (crenderer, GSK_PANGO_RENDERER_CURSOR);
gtk_snapshot_push_clip (crenderer->snapshot, &bounds);
pango_renderer_draw_layout_line (PANGO_RENDERER (crenderer),
line,
line_rect.x,
baseline);
gtk_snapshot_pop (crenderer->snapshot);
}
gtk_snapshot_pop (crenderer->snapshot);
}
}
byte_offset += line->length;
}
while (pango_layout_iter_next_line (iter));
gtk_snapshot_restore (crenderer->snapshot);
gdk_rgba_free (selection);
pango_layout_iter_free (iter);
}
void
gtk_text_layout_snapshot (GtkTextLayout *layout,
GtkWidget *widget,
GtkSnapshot *snapshot,
const GdkRectangle *clip,
float cursor_alpha)
{
GskPangoRenderer *crenderer;
GtkStyleContext *context;
gint offset_y;
GtkTextIter selection_start, selection_end;
gboolean have_selection;
GSList *line_list;
GSList *tmp_list;
GdkRGBA color;
g_return_if_fail (GTK_IS_TEXT_LAYOUT (layout));
g_return_if_fail (layout->default_style != NULL);
g_return_if_fail (layout->buffer != NULL);
g_return_if_fail (snapshot != NULL);
context = gtk_widget_get_style_context (widget);
gtk_style_context_get_color (context, &color);
line_list = gtk_text_layout_get_lines (layout, clip->y, clip->y + clip->height, &offset_y);
if (line_list == NULL)
return; /* nothing on the screen */
crenderer = gsk_pango_renderer_acquire ();
crenderer->widget = widget;
crenderer->snapshot = snapshot;
crenderer->fg_color = color;
graphene_rect_init (&crenderer->bounds,
clip->x,
clip->y,
clip->width,
clip->height);
gtk_text_layout_wrap_loop_start (layout);
have_selection = gtk_text_buffer_get_selection_bounds (layout->buffer,
&selection_start,
&selection_end);
tmp_list = line_list;
while (tmp_list != NULL)
{
GtkTextLine *line = tmp_list->data;
GtkTextLineDisplay *line_display;
gint selection_start_index = -1;
gint selection_end_index = -1;
line_display = gtk_text_layout_get_line_display (layout, line, FALSE);
if (line_display->height > 0)
{
g_assert (line_display->layout != NULL);
if (have_selection)
{
GtkTextIter line_start, line_end;
gint byte_count;
gtk_text_layout_get_iter_at_line (layout, &line_start, line, 0);
line_end = line_start;
if (!gtk_text_iter_ends_line (&line_end))
gtk_text_iter_forward_to_line_end (&line_end);
byte_count = gtk_text_iter_get_visible_line_index (&line_end);
if (gtk_text_iter_compare (&selection_start, &line_end) <= 0 &&
gtk_text_iter_compare (&selection_end, &line_start) >= 0)
{
if (gtk_text_iter_compare (&selection_start, &line_start) >= 0)
selection_start_index = gtk_text_iter_get_visible_line_index (&selection_start);
else
selection_start_index = -1;
if (gtk_text_iter_compare (&selection_end, &line_end) <= 0)
selection_end_index = gtk_text_iter_get_visible_line_index (&selection_end);
else
selection_end_index = byte_count + 1; /* + 1 to flag past-the-end */
}
}
render_para (crenderer, offset_y, line_display,
selection_start_index, selection_end_index,
cursor_alpha);
/* We paint the cursors last, because they overlap another chunk
* and need to appear on top.
*/
if (line_display->cursors != NULL)
{
int i;
gtk_snapshot_push_opacity (crenderer->snapshot, cursor_alpha);
for (i = 0; i < line_display->cursors->len; i++)
{
int index;
PangoDirection dir;
index = g_array_index(line_display->cursors, int, i);
dir = (line_display->direction == GTK_TEXT_DIR_RTL) ? PANGO_DIRECTION_RTL : PANGO_DIRECTION_LTR;
gtk_snapshot_render_insertion_cursor (crenderer->snapshot, context,
line_display->x_offset, offset_y + line_display->top_margin,
line_display->layout, index, dir);
}
gtk_snapshot_pop (crenderer->snapshot);
}
} /* line_display->height > 0 */
offset_y += line_display->height;
gtk_text_layout_free_line_display (layout, line_display);
tmp_list = tmp_list->next;
}
gtk_text_layout_wrap_loop_end (layout);
g_slist_free (line_list);
gsk_pango_renderer_release (crenderer);
}

86
gtk/gtktextlayoutprivate.h
View File

@ -113,6 +113,14 @@ struct _GtkTextLayout
gint width; gint width;
gint height; gint height;
/* Pixel offsets from the left and from the top to be used when we
* draw; these allow us to create left/top margins. We don't need
* anything special for bottom/right margins, because those don't
* affect drawing.
*/
/* gint left_edge; */
/* gint top_edge; */
GtkTextBuffer *buffer; GtkTextBuffer *buffer;
gint left_padding; gint left_padding;
@ -137,7 +145,7 @@ struct _GtkTextLayout
/* Whether we are allowed to wrap right now */ /* Whether we are allowed to wrap right now */
gint wrap_loop_count; gint wrap_loop_count;
/* Whether to show the insertion cursor */ /* Whether to show the insertion cursor */
guint cursor_visible : 1; guint cursor_visible : 1;
@ -246,217 +254,155 @@ struct _GtkTextLineDisplay
extern G_GNUC_INTERNAL PangoAttrType gtk_text_attr_appearance_type; extern G_GNUC_INTERNAL PangoAttrType gtk_text_attr_appearance_type;
#endif #endif
GDK_AVAILABLE_IN_ALL
GType gtk_text_layout_get_type (void) G_GNUC_CONST; GType gtk_text_layout_get_type (void) G_GNUC_CONST;
GDK_AVAILABLE_IN_ALL
GtkTextLayout* gtk_text_layout_new (void); GtkTextLayout* gtk_text_layout_new (void);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_set_buffer (GtkTextLayout *layout, void gtk_text_layout_set_buffer (GtkTextLayout *layout,
GtkTextBuffer *buffer); GtkTextBuffer *buffer);
GDK_AVAILABLE_IN_ALL
GtkTextBuffer *gtk_text_layout_get_buffer (GtkTextLayout *layout); GtkTextBuffer *gtk_text_layout_get_buffer (GtkTextLayout *layout);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_set_default_style (GtkTextLayout *layout, void gtk_text_layout_set_default_style (GtkTextLayout *layout,
GtkTextAttributes *values); GtkTextAttributes *values);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_set_contexts (GtkTextLayout *layout, void gtk_text_layout_set_contexts (GtkTextLayout *layout,
PangoContext *ltr_context, PangoContext *ltr_context,
PangoContext *rtl_context); PangoContext *rtl_context);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_set_cursor_direction (GtkTextLayout *layout, void gtk_text_layout_set_cursor_direction (GtkTextLayout *layout,
GtkTextDirection direction); GtkTextDirection direction);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_set_overwrite_mode (GtkTextLayout *layout, void gtk_text_layout_set_overwrite_mode (GtkTextLayout *layout,
gboolean overwrite); gboolean overwrite);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_set_keyboard_direction (GtkTextLayout *layout, void gtk_text_layout_set_keyboard_direction (GtkTextLayout *layout,
GtkTextDirection keyboard_dir); GtkTextDirection keyboard_dir);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_default_style_changed (GtkTextLayout *layout); void gtk_text_layout_default_style_changed (GtkTextLayout *layout);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_set_screen_width (GtkTextLayout *layout, void gtk_text_layout_set_screen_width (GtkTextLayout *layout,
gint width); gint width);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_set_preedit_string (GtkTextLayout *layout, void gtk_text_layout_set_preedit_string (GtkTextLayout *layout,
const gchar *preedit_string, const gchar *preedit_string,
PangoAttrList *preedit_attrs, PangoAttrList *preedit_attrs,
gint cursor_pos); gint cursor_pos);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_set_cursor_visible (GtkTextLayout *layout, void gtk_text_layout_set_cursor_visible (GtkTextLayout *layout,
gboolean cursor_visible); gboolean cursor_visible);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_layout_get_cursor_visible (GtkTextLayout *layout); gboolean gtk_text_layout_get_cursor_visible (GtkTextLayout *layout);
/* Getting the size or the lines potentially results in a call to
* recompute, which is pretty massively expensive. Thus it should
* basically only be done in an idle handler.
*
* Long-term, we would really like to be able to do these without
* a full recompute so they may get cheaper over time.
*/
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_get_size (GtkTextLayout *layout, void gtk_text_layout_get_size (GtkTextLayout *layout,
gint *width, gint *width,
gint *height); gint *height);
GDK_AVAILABLE_IN_ALL
GSList* gtk_text_layout_get_lines (GtkTextLayout *layout, GSList* gtk_text_layout_get_lines (GtkTextLayout *layout,
/* [top_y, bottom_y) */
gint top_y, gint top_y,
gint bottom_y, gint bottom_y,
gint *first_line_y); gint *first_line_y);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_wrap_loop_start (GtkTextLayout *layout); void gtk_text_layout_wrap_loop_start (GtkTextLayout *layout);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_wrap_loop_end (GtkTextLayout *layout); void gtk_text_layout_wrap_loop_end (GtkTextLayout *layout);
GDK_AVAILABLE_IN_ALL
GtkTextLineDisplay* gtk_text_layout_get_line_display (GtkTextLayout *layout, GtkTextLineDisplay* gtk_text_layout_get_line_display (GtkTextLayout *layout,
GtkTextLine *line, GtkTextLine *line,
gboolean size_only); gboolean size_only);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_free_line_display (GtkTextLayout *layout, void gtk_text_layout_free_line_display (GtkTextLayout *layout,
GtkTextLineDisplay *display); GtkTextLineDisplay *display);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_get_line_at_y (GtkTextLayout *layout, void gtk_text_layout_get_line_at_y (GtkTextLayout *layout,
GtkTextIter *target_iter, GtkTextIter *target_iter,
gint y, gint y,
gint *line_top); gint *line_top);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_layout_get_iter_at_pixel (GtkTextLayout *layout, gboolean gtk_text_layout_get_iter_at_pixel (GtkTextLayout *layout,
GtkTextIter *iter, GtkTextIter *iter,
gint x, gint x,
gint y); gint y);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_layout_get_iter_at_position (GtkTextLayout *layout, gboolean gtk_text_layout_get_iter_at_position (GtkTextLayout *layout,
GtkTextIter *iter, GtkTextIter *iter,
gint *trailing, gint *trailing,
gint x, gint x,
gint y); gint y);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_invalidate (GtkTextLayout *layout, void gtk_text_layout_invalidate (GtkTextLayout *layout,
const GtkTextIter *start, const GtkTextIter *start,
const GtkTextIter *end); const GtkTextIter *end);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_invalidate_cursors(GtkTextLayout *layout, void gtk_text_layout_invalidate_cursors(GtkTextLayout *layout,
const GtkTextIter *start, const GtkTextIter *start,
const GtkTextIter *end); const GtkTextIter *end);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_free_line_data (GtkTextLayout *layout, void gtk_text_layout_free_line_data (GtkTextLayout *layout,
GtkTextLine *line, GtkTextLine *line,
GtkTextLineData *line_data); GtkTextLineData *line_data);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_layout_is_valid (GtkTextLayout *layout); gboolean gtk_text_layout_is_valid (GtkTextLayout *layout);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_validate_yrange (GtkTextLayout *layout, void gtk_text_layout_validate_yrange (GtkTextLayout *layout,
GtkTextIter *anchor_line, GtkTextIter *anchor_line,
gint y0_, gint y0_,
gint y1_); gint y1_);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_validate (GtkTextLayout *layout, void gtk_text_layout_validate (GtkTextLayout *layout,
gint max_pixels); gint max_pixels);
/* This function should return the passed-in line data,
* OR remove the existing line data from the line, and
* return a NEW line data after adding it to the line.
* That is, invariant after calling the callback is that
* there should be exactly one line data for this view
* stored on the btree line.
*/
GDK_AVAILABLE_IN_ALL
GtkTextLineData* gtk_text_layout_wrap (GtkTextLayout *layout, GtkTextLineData* gtk_text_layout_wrap (GtkTextLayout *layout,
GtkTextLine *line, GtkTextLine *line,
GtkTextLineData *line_data); /* may be NULL */ GtkTextLineData *line_data);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_changed (GtkTextLayout *layout, void gtk_text_layout_changed (GtkTextLayout *layout,
gint y, gint y,
gint old_height, gint old_height,
gint new_height); gint new_height);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_cursors_changed (GtkTextLayout *layout, void gtk_text_layout_cursors_changed (GtkTextLayout *layout,
gint y, gint y,
gint old_height, gint old_height,
gint new_height); gint new_height);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_get_iter_location (GtkTextLayout *layout, void gtk_text_layout_get_iter_location (GtkTextLayout *layout,
const GtkTextIter *iter, const GtkTextIter *iter,
GdkRectangle *rect); GdkRectangle *rect);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_get_line_yrange (GtkTextLayout *layout, void gtk_text_layout_get_line_yrange (GtkTextLayout *layout,
const GtkTextIter *iter, const GtkTextIter *iter,
gint *y, gint *y,
gint *height); gint *height);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_get_cursor_locations (GtkTextLayout *layout, void gtk_text_layout_get_cursor_locations (GtkTextLayout *layout,
GtkTextIter *iter, GtkTextIter *iter,
GdkRectangle *strong_pos, GdkRectangle *strong_pos,
GdkRectangle *weak_pos); GdkRectangle *weak_pos);
gboolean _gtk_text_layout_get_block_cursor (GtkTextLayout *layout, gboolean _gtk_text_layout_get_block_cursor (GtkTextLayout *layout,
GdkRectangle *pos); GdkRectangle *pos);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_layout_clamp_iter_to_vrange (GtkTextLayout *layout, gboolean gtk_text_layout_clamp_iter_to_vrange (GtkTextLayout *layout,
GtkTextIter *iter, GtkTextIter *iter,
gint top, gint top,
gint bottom); gint bottom);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_layout_move_iter_to_line_end (GtkTextLayout *layout, gboolean gtk_text_layout_move_iter_to_line_end (GtkTextLayout *layout,
GtkTextIter *iter, GtkTextIter *iter,
gint direction); gint direction);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_layout_move_iter_to_previous_line (GtkTextLayout *layout, gboolean gtk_text_layout_move_iter_to_previous_line (GtkTextLayout *layout,
GtkTextIter *iter); GtkTextIter *iter);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_layout_move_iter_to_next_line (GtkTextLayout *layout, gboolean gtk_text_layout_move_iter_to_next_line (GtkTextLayout *layout,
GtkTextIter *iter); GtkTextIter *iter);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_move_iter_to_x (GtkTextLayout *layout, void gtk_text_layout_move_iter_to_x (GtkTextLayout *layout,
GtkTextIter *iter, GtkTextIter *iter,
gint x); gint x);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_layout_move_iter_visually (GtkTextLayout *layout, gboolean gtk_text_layout_move_iter_visually (GtkTextLayout *layout,
GtkTextIter *iter, GtkTextIter *iter,
gint count); gint count);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_layout_iter_starts_line (GtkTextLayout *layout, gboolean gtk_text_layout_iter_starts_line (GtkTextLayout *layout,
const GtkTextIter *iter); const GtkTextIter *iter);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_get_iter_at_line (GtkTextLayout *layout, void gtk_text_layout_get_iter_at_line (GtkTextLayout *layout,
GtkTextIter *iter, GtkTextIter *iter,
GtkTextLine *line, GtkTextLine *line,
gint byte_offset); gint byte_offset);
/* Don't use these. Use gtk_text_view_add_child_at_anchor().
* These functions are defined in gtktextchild.c, but here
* since they are semi-public and require GtkTextLayout to
* be declared.
*/
GDK_AVAILABLE_IN_ALL
void gtk_text_child_anchor_register_child (GtkTextChildAnchor *anchor, void gtk_text_child_anchor_register_child (GtkTextChildAnchor *anchor,
GtkWidget *child, GtkWidget *child,
GtkTextLayout *layout); GtkTextLayout *layout);
GDK_AVAILABLE_IN_ALL
void gtk_text_child_anchor_unregister_child (GtkTextChildAnchor *anchor, void gtk_text_child_anchor_unregister_child (GtkTextChildAnchor *anchor,
GtkWidget *child); GtkWidget *child);
GDK_AVAILABLE_IN_ALL
void gtk_text_child_anchor_queue_resize (GtkTextChildAnchor *anchor, void gtk_text_child_anchor_queue_resize (GtkTextChildAnchor *anchor,
GtkTextLayout *layout); GtkTextLayout *layout);
GDK_AVAILABLE_IN_ALL
void gtk_text_anchored_child_set_layout (GtkWidget *child, void gtk_text_anchored_child_set_layout (GtkWidget *child,
GtkTextLayout *layout); GtkTextLayout *layout);
GDK_AVAILABLE_IN_ALL
void gtk_text_layout_spew (GtkTextLayout *layout); void gtk_text_layout_spew (GtkTextLayout *layout);
void gtk_text_layout_snapshot (GtkTextLayout *layout,
GtkWidget *widget,
GtkSnapshot *snapshot,
const GdkRectangle *clip,
float cursor_alpha);
G_END_DECLS G_END_DECLS
#endif /* __GTK_TEXT_LAYOUT_PRIVATE_H__ */ #endif /* __GTK_TEXT_LAYOUT_PRIVATE_H__ */

1
gtk/gtktextsegment.h
View File

@ -150,7 +150,6 @@ struct _GtkTextLineSegment {
}; };
GDK_AVAILABLE_IN_ALL
GtkTextLineSegment *gtk_text_line_segment_split (const GtkTextIter *iter); GtkTextLineSegment *gtk_text_line_segment_split (const GtkTextIter *iter);
GtkTextLineSegment *_gtk_char_segment_new (const gchar *text, GtkTextLineSegment *_gtk_char_segment_new (const gchar *text,

4
gtk/gtktextutil.c
View File

@ -27,8 +27,8 @@
#include "gtktextview.h" #include "gtktextview.h"
#include "gtktextutil.h" #include "gtktextutil.h"
#include "gtktextdisplayprivate.h"
#include "gtktextbuffer.h" #include "gtktextbuffer.h"
#include "gtktextlayoutprivate.h"
#include "gtkmenuitem.h" #include "gtkmenuitem.h"
#include "gtkintl.h" #include "gtkintl.h"
@ -335,7 +335,7 @@ gtk_text_util_create_rich_drag_icon (GtkWidget *widget,
snapshot = gtk_snapshot_new (); snapshot = gtk_snapshot_new ();
gtk_text_layout_snapshot (layout, widget, snapshot, &(GdkRectangle) { 0, 0, layout_width, layout_height }); gtk_text_layout_snapshot (layout, widget, snapshot, &(GdkRectangle) { 0, 0, layout_width, layout_height }, 1.0);
g_object_unref (layout); g_object_unref (layout);
g_object_unref (new_buffer); g_object_unref (new_buffer);

186
gtk/gtktextview.c
View File

@ -41,7 +41,6 @@
#include "gtkrenderbackgroundprivate.h" #include "gtkrenderbackgroundprivate.h"
#include "gtkseparatormenuitem.h" #include "gtkseparatormenuitem.h"
#include "gtksettings.h" #include "gtksettings.h"
#include "gtktextdisplayprivate.h"
#include "gtktextiterprivate.h" #include "gtktextiterprivate.h"
#include "gtkimmulticontext.h" #include "gtkimmulticontext.h"
#include "gtkprivate.h" #include "gtkprivate.h"
@ -210,7 +209,10 @@ struct _GtkTextViewPrivate
GtkTextMark *first_para_mark; /* Mark at the beginning of the first onscreen paragraph */ GtkTextMark *first_para_mark; /* Mark at the beginning of the first onscreen paragraph */
gint first_para_pixels; /* Offset of top of screen in the first onscreen paragraph */ gint first_para_pixels; /* Offset of top of screen in the first onscreen paragraph */
guint blink_timeout; guint64 blink_start_time;
guint blink_tick;
float cursor_alpha;
guint scroll_timeout; guint scroll_timeout;
guint first_validate_idle; /* Idle to revalidate onscreen portion, runs before resize */ guint first_validate_idle; /* Idle to revalidate onscreen portion, runs before resize */
@ -5347,12 +5349,6 @@ gtk_text_view_paint (GtkWidget *widget,
g_warning (G_STRLOC ": somehow some text lines were modified or scrolling occurred since the last validation of lines on the screen - may be a text widget bug."); g_warning (G_STRLOC ": somehow some text lines were modified or scrolling occurred since the last validation of lines on the screen - may be a text widget bug.");
g_assert_not_reached (); g_assert_not_reached ();
} }
#if 0
printf ("painting %d,%d %d x %d\n",
area->x, area->y,
area->width, area->height);
#endif
gtk_snapshot_save (snapshot); gtk_snapshot_save (snapshot);
gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (-priv->xoffset, -priv->yoffset)); gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (-priv->xoffset, -priv->yoffset));
@ -5365,7 +5361,8 @@ gtk_text_view_paint (GtkWidget *widget,
priv->yoffset, priv->yoffset,
gtk_widget_get_width (widget), gtk_widget_get_width (widget),
gtk_widget_get_height (widget) gtk_widget_get_height (widget)
}); },
priv->cursor_alpha);
gtk_snapshot_restore (snapshot); gtk_snapshot_restore (snapshot);
} }
@ -5662,15 +5659,80 @@ get_cursor_blink_timeout (GtkTextView *text_view)
* Blink! * Blink!
*/ */
static gint typedef struct {
blink_cb (gpointer data) guint64 start;
guint64 end;
} BlinkData;
static gboolean blink_cb (GtkWidget *widget,
GdkFrameClock *clock,
gpointer user_data);
static void
add_blink_timeout (GtkTextView *self)
{
GtkTextViewPrivate *priv = self->priv;
BlinkData *data;
int blink_time;
priv->blink_start_time = g_get_monotonic_time ();
priv->cursor_alpha = 1.0;
blink_time = get_cursor_time (self);
data = g_new (BlinkData, 1);
data->start = priv->blink_start_time;
data->end = data->start + blink_time * 1000;
priv->blink_tick = gtk_widget_add_tick_callback (GTK_WIDGET (self),
blink_cb,
data,
g_free);
}
static void
remove_blink_timeout (GtkTextView *self)
{
GtkTextViewPrivate *priv = self->priv;
if (priv->blink_tick)
{
gtk_widget_remove_tick_callback (GTK_WIDGET (self), priv->blink_tick);
priv->blink_tick = 0;
}
}
static float
blink_alpha (float phase)
{
/* keep it simple, and split the blink cycle evenly
* into visible, fading out, invisible, fading in
*/
if (phase < 0.25)
return 1;
else if (phase < 0.5)
return 1 - 4 * (phase - 0.25);
else if (phase < 0.75)
return 0;
else
return 4 * (phase - 0.75);
}
static gboolean
blink_cb (GtkWidget *widget,
GdkFrameClock *clock,
gpointer user_data)
{ {
GtkTextView *text_view; GtkTextView *text_view;
GtkTextViewPrivate *priv; GtkTextViewPrivate *priv;
gboolean visible;
gint blink_timeout; gint blink_timeout;
gint blink_time;
guint64 now;
float phase;
BlinkData *data = user_data;
text_view = GTK_TEXT_VIEW (data); text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv; priv = text_view->priv;
if (!gtk_widget_has_focus (GTK_WIDGET (text_view))) if (!gtk_widget_has_focus (GTK_WIDGET (text_view)))
@ -5678,7 +5740,6 @@ blink_cb (gpointer data)
g_warning ("GtkTextView - did not receive a focus-out.\n" g_warning ("GtkTextView - did not receive a focus-out.\n"
"If you handle this event, you must return\n" "If you handle this event, you must return\n"
"GDK_EVENT_PROPAGATE so the text view gets the event as well"); "GDK_EVENT_PROPAGATE so the text view gets the event as well");
gtk_text_view_check_cursor_blink (text_view); gtk_text_view_check_cursor_blink (text_view);
return FALSE; return FALSE;
@ -5687,47 +5748,41 @@ blink_cb (gpointer data)
g_assert (priv->layout); g_assert (priv->layout);
g_assert (cursor_visible (text_view)); g_assert (cursor_visible (text_view));
visible = gtk_text_layout_get_cursor_visible (priv->layout);
blink_timeout = get_cursor_blink_timeout (text_view); blink_timeout = get_cursor_blink_timeout (text_view);
if (priv->blink_time > 1000 * blink_timeout && blink_time = get_cursor_time (text_view);
blink_timeout < G_MAXINT/1000)
now = g_get_monotonic_time ();
if (now > priv->blink_start_time + blink_timeout * 1000000)
{ {
/* we've blinked enough without the user doing anything, stop blinking */ /* we've blinked enough without the user doing anything, stop blinking */
visible = 0; priv->cursor_alpha = 1.0;
priv->blink_timeout = 0; remove_blink_timeout (text_view);
} gtk_widget_queue_draw (widget);
else if (visible)
{ return G_SOURCE_REMOVE;
priv->blink_timeout = g_timeout_add (get_cursor_time (text_view) * CURSOR_OFF_MULTIPLIER / CURSOR_DIVIDER,
blink_cb,
text_view);
g_source_set_name_by_id (priv->blink_timeout, "[gtk] blink_cb");
}
else
{
priv->blink_timeout = g_timeout_add (get_cursor_time (text_view) * CURSOR_ON_MULTIPLIER / CURSOR_DIVIDER,
blink_cb,
text_view);
g_source_set_name_by_id (priv->blink_timeout, "[gtk] blink_cb");
priv->blink_time += get_cursor_time (text_view);
} }
gtk_text_layout_set_cursor_visible (priv->layout, !visible); phase = (now - data->start) / (float) (data->end - data->start);
/* Remove ourselves */ priv->cursor_alpha = blink_alpha (phase);
return FALSE;
if (now >= data->end)
{
data->start = data->end;
data->end = data->start + blink_time * 1000;
}
gtk_widget_queue_draw (widget);
return G_SOURCE_CONTINUE;
} }
static void static void
gtk_text_view_stop_cursor_blink (GtkTextView *text_view) gtk_text_view_stop_cursor_blink (GtkTextView *text_view)
{ {
if (text_view->priv->blink_timeout) remove_blink_timeout (text_view);
{
g_source_remove (text_view->priv->blink_timeout);
text_view->priv->blink_timeout = 0;
}
} }
static void static void
@ -5735,52 +5790,25 @@ gtk_text_view_check_cursor_blink (GtkTextView *text_view)
{ {
GtkTextViewPrivate *priv = text_view->priv; GtkTextViewPrivate *priv = text_view->priv;
if (priv->layout != NULL && if (cursor_blinks (text_view))
cursor_visible (text_view) &&
gtk_widget_has_focus (GTK_WIDGET (text_view)))
{ {
if (cursor_blinks (text_view)) if (!priv->blink_tick)
{ add_blink_timeout (text_view);
if (priv->blink_timeout == 0)
{
gtk_text_layout_set_cursor_visible (priv->layout, TRUE);
priv->blink_timeout = g_timeout_add (get_cursor_time (text_view) * CURSOR_OFF_MULTIPLIER / CURSOR_DIVIDER,
blink_cb,
text_view);
g_source_set_name_by_id (priv->blink_timeout, "[gtk] blink_cb");
}
}
else
{
gtk_text_view_stop_cursor_blink (text_view);
gtk_text_layout_set_cursor_visible (priv->layout, TRUE);
}
} }
else else
{ {
gtk_text_view_stop_cursor_blink (text_view); if (priv->blink_tick)
gtk_text_layout_set_cursor_visible (priv->layout, FALSE); remove_blink_timeout (text_view);
} }
} }
static void static void
gtk_text_view_pend_cursor_blink (GtkTextView *text_view) gtk_text_view_pend_cursor_blink (GtkTextView *text_view)
{ {
GtkTextViewPrivate *priv = text_view->priv; if (cursor_blinks (text_view))
if (priv->layout != NULL &&
cursor_visible (text_view) &&
gtk_widget_has_focus (GTK_WIDGET (text_view)) &&
cursor_blinks (text_view))
{ {
gtk_text_view_stop_cursor_blink (text_view); remove_blink_timeout (text_view);
gtk_text_layout_set_cursor_visible (priv->layout, TRUE); add_blink_timeout (text_view);
priv->blink_timeout = g_timeout_add (get_cursor_time (text_view) * CURSOR_PEND_MULTIPLIER / CURSOR_DIVIDER,
blink_cb,
text_view);
g_source_set_name_by_id (priv->blink_timeout, "[gtk] blink_cb");
} }
} }
@ -5789,7 +5817,7 @@ gtk_text_view_reset_blink_time (GtkTextView *text_view)
{ {
GtkTextViewPrivate *priv = text_view->priv; GtkTextViewPrivate *priv = text_view->priv;
priv->blink_time = 0; priv->blink_start_time = g_get_monotonic_time ();
} }

1
gtk/meson.build
View File

@ -366,7 +366,6 @@ gtk_public_sources = files([
'gtktextattributes.c', 'gtktextattributes.c',
'gtktextbuffer.c', 'gtktextbuffer.c',
'gtktextchild.c', 'gtktextchild.c',
'gtktextdisplay.c',
'gtktexthandle.c', 'gtktexthandle.c',
'gtktextiter.c', 'gtktextiter.c',
'gtktextlayout.c', 'gtktextlayout.c',