forked from AuroraMiddleware/gtk
021aaef824
It never makes sense to paint a texture that needs recoloring. If you call the regular snapshot on a symbolic texture we just use the default recoloring colors. To support this we also change gtk_css_style_snapshot_icon_paintable() to call gtk_icon_paintable_snapshot_with_colors() for IconPaintables so that we get the correct colors, and we make it not emit the color matrix. Since we now rely on the icon to do the recoloring we also drop the recolor argument in gtk_icon_paintable_snapshot_with_colors() as its not needed anymore.
532 lines
14 KiB
C
532 lines
14 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2010 Carlos Garnacho <carlosg@gnome.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gtkrender.h"
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#include <math.h>
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#include "gtkcsscornervalueprivate.h"
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#include "gtkcssimagevalueprivate.h"
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#include "gtkcssnumbervalueprivate.h"
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#include "gtkcsscolorvalueprivate.h"
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#include "gtkcssshadowvalueprivate.h"
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#include "gtkcsstransformvalueprivate.h"
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#include "gtkhslaprivate.h"
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#include "gtkrendericonprivate.h"
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#include "gtkstylecontextprivate.h"
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#include "gsk/gskroundedrectprivate.h"
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#include <gdk/gdktextureprivate.h>
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#include "fallback-c89.c"
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static void
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gtk_do_render_icon (GtkStyleContext *context,
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cairo_t *cr,
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gdouble x,
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gdouble y,
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gdouble width,
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gdouble height)
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{
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GtkSnapshot *snapshot;
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GskRenderNode *node;
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snapshot = gtk_snapshot_new ();
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gtk_css_style_snapshot_icon (gtk_style_context_lookup_style (context), snapshot, width, height);
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node = gtk_snapshot_free_to_node (snapshot);
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if (node == NULL)
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return;
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cairo_save (cr);
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cairo_translate (cr, x, y);
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gsk_render_node_draw (node, cr);
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cairo_restore (cr);
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gsk_render_node_unref (node);
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}
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/**
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* gtk_render_check:
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* @context: a #GtkStyleContext
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* @cr: a #cairo_t
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* @x: X origin of the rectangle
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* @y: Y origin of the rectangle
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* @width: rectangle width
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* @height: rectangle height
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*
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* Renders a checkmark (as in a #GtkCheckButton).
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*
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* The %GTK_STATE_FLAG_CHECKED state determines whether the check is
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* on or off, and %GTK_STATE_FLAG_INCONSISTENT determines whether it
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* should be marked as undefined.
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*
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* Typical checkmark rendering:
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*
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* 
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**/
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void
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gtk_render_check (GtkStyleContext *context,
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cairo_t *cr,
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gdouble x,
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gdouble y,
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gdouble width,
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gdouble height)
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{
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g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
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g_return_if_fail (cr != NULL);
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if (width <= 0 || height <= 0)
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return;
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gtk_do_render_icon (context, cr, x, y, width, height);
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}
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/**
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* gtk_render_option:
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* @context: a #GtkStyleContext
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* @cr: a #cairo_t
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* @x: X origin of the rectangle
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* @y: Y origin of the rectangle
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* @width: rectangle width
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* @height: rectangle height
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*
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* Renders an option mark (as in a #GtkRadioButton), the %GTK_STATE_FLAG_CHECKED
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* state will determine whether the option is on or off, and
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* %GTK_STATE_FLAG_INCONSISTENT whether it should be marked as undefined.
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*
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* Typical option mark rendering:
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*
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* 
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**/
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void
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gtk_render_option (GtkStyleContext *context,
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cairo_t *cr,
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gdouble x,
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gdouble y,
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gdouble width,
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gdouble height)
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{
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g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
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g_return_if_fail (cr != NULL);
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if (width <= 0 || height <= 0)
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return;
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gtk_do_render_icon (context, cr, x, y, width, height);
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}
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/**
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* gtk_render_arrow:
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* @context: a #GtkStyleContext
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* @cr: a #cairo_t
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* @angle: arrow angle from 0 to 2 * %G_PI, being 0 the arrow pointing to the north
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* @x: X origin of the render area
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* @y: Y origin of the render area
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* @size: square side for render area
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*
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* Renders an arrow pointing to @angle.
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*
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* Typical arrow rendering at 0, 1⁄2 π;, π; and 3⁄2 π:
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*
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* 
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**/
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void
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gtk_render_arrow (GtkStyleContext *context,
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cairo_t *cr,
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gdouble angle,
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gdouble x,
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gdouble y,
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gdouble size)
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{
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g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
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g_return_if_fail (cr != NULL);
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if (size <= 0)
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return;
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gtk_do_render_icon (context, cr, x, y, size, size);
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}
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/**
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* gtk_render_background:
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* @context: a #GtkStyleContext
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* @cr: a #cairo_t
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* @x: X origin of the rectangle
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* @y: Y origin of the rectangle
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* @width: rectangle width
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* @height: rectangle height
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*
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* Renders the background of an element.
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*
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* Typical background rendering, showing the effect of
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* `background-image`, `border-width` and `border-radius`:
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*
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* 
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**/
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void
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gtk_render_background (GtkStyleContext *context,
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cairo_t *cr,
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gdouble x,
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gdouble y,
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gdouble width,
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gdouble height)
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{
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GtkSnapshot *snapshot;
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GskRenderNode *node;
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g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
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g_return_if_fail (cr != NULL);
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if (width <= 0 || height <= 0)
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return;
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snapshot = gtk_snapshot_new ();
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gtk_snapshot_render_background (snapshot, context, x, y, width, height);
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node = gtk_snapshot_free_to_node (snapshot);
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if (node == NULL)
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return;
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cairo_save (cr);
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gsk_render_node_draw (node, cr);
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cairo_restore (cr);
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gsk_render_node_unref (node);
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}
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/**
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* gtk_render_frame:
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* @context: a #GtkStyleContext
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* @cr: a #cairo_t
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* @x: X origin of the rectangle
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* @y: Y origin of the rectangle
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* @width: rectangle width
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* @height: rectangle height
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*
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* Renders a frame around the rectangle defined by @x, @y, @width, @height.
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*
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* Examples of frame rendering, showing the effect of `border-image`,
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* `border-color`, `border-width`, `border-radius` and junctions:
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*
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* 
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**/
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void
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gtk_render_frame (GtkStyleContext *context,
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cairo_t *cr,
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gdouble x,
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gdouble y,
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gdouble width,
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gdouble height)
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{
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GtkSnapshot *snapshot;
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GskRenderNode *node;
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g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
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g_return_if_fail (cr != NULL);
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if (width <= 0 || height <= 0)
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return;
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snapshot = gtk_snapshot_new ();
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gtk_snapshot_render_frame (snapshot, context, x, y, width, height);
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node = gtk_snapshot_free_to_node (snapshot);
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if (node == NULL)
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return;
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cairo_save (cr);
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gsk_render_node_draw (node, cr);
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cairo_restore (cr);
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gsk_render_node_unref (node);
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}
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/**
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* gtk_render_expander:
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* @context: a #GtkStyleContext
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* @cr: a #cairo_t
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* @x: X origin of the rectangle
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* @y: Y origin of the rectangle
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* @width: rectangle width
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* @height: rectangle height
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*
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* Renders an expander (as used in #GtkTreeView and #GtkExpander) in the area
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* defined by @x, @y, @width, @height. The state %GTK_STATE_FLAG_CHECKED
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* determines whether the expander is collapsed or expanded.
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*
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* Typical expander rendering:
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*
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* 
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**/
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void
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gtk_render_expander (GtkStyleContext *context,
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cairo_t *cr,
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gdouble x,
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gdouble y,
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gdouble width,
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gdouble height)
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{
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g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
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g_return_if_fail (cr != NULL);
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if (width <= 0 || height <= 0)
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return;
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gtk_do_render_icon (context, cr, x, y, width, height);
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}
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/**
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* gtk_render_focus:
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* @context: a #GtkStyleContext
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* @cr: a #cairo_t
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* @x: X origin of the rectangle
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* @y: Y origin of the rectangle
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* @width: rectangle width
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* @height: rectangle height
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*
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* Renders a focus indicator on the rectangle determined by @x, @y, @width, @height.
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*
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* Typical focus rendering:
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*
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* 
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**/
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void
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gtk_render_focus (GtkStyleContext *context,
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cairo_t *cr,
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gdouble x,
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gdouble y,
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gdouble width,
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gdouble height)
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{
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GtkSnapshot *snapshot;
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GskRenderNode *node;
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g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
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g_return_if_fail (cr != NULL);
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if (width <= 0 || height <= 0)
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return;
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snapshot = gtk_snapshot_new ();
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gtk_snapshot_render_frame (snapshot, context, x, y, width, height);
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node = gtk_snapshot_free_to_node (snapshot);
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if (node == NULL)
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return;
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cairo_save (cr);
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gsk_render_node_draw (node, cr);
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cairo_restore (cr);
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gsk_render_node_unref (node);
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}
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/**
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* gtk_render_layout:
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* @context: a #GtkStyleContext
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* @cr: a #cairo_t
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* @x: X origin
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* @y: Y origin
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* @layout: the #PangoLayout to render
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*
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* Renders @layout on the coordinates @x, @y
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**/
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void
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gtk_render_layout (GtkStyleContext *context,
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cairo_t *cr,
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gdouble x,
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gdouble y,
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PangoLayout *layout)
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{
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GtkSnapshot *snapshot;
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GskRenderNode *node;
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g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
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g_return_if_fail (PANGO_IS_LAYOUT (layout));
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g_return_if_fail (cr != NULL);
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snapshot = gtk_snapshot_new ();
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gtk_snapshot_render_layout (snapshot, context, x, y, layout);
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node = gtk_snapshot_free_to_node (snapshot);
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if (node == NULL)
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return;
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cairo_save (cr);
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gsk_render_node_draw (node, cr);
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cairo_restore (cr);
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gsk_render_node_unref (node);
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}
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static void
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gtk_do_render_line (GtkStyleContext *context,
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cairo_t *cr,
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gdouble x0,
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gdouble y0,
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gdouble x1,
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gdouble y1)
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{
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const GdkRGBA *color;
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cairo_save (cr);
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color = gtk_css_color_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_COLOR));
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cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
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cairo_set_line_width (cr, 1);
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cairo_move_to (cr, x0 + 0.5, y0 + 0.5);
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cairo_line_to (cr, x1 + 0.5, y1 + 0.5);
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gdk_cairo_set_source_rgba (cr, color);
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cairo_stroke (cr);
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cairo_restore (cr);
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}
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/**
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* gtk_render_line:
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* @context: a #GtkStyleContext
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* @cr: a #cairo_t
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* @x0: X coordinate for the origin of the line
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* @y0: Y coordinate for the origin of the line
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* @x1: X coordinate for the end of the line
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* @y1: Y coordinate for the end of the line
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*
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* Renders a line from (x0, y0) to (x1, y1).
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**/
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void
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gtk_render_line (GtkStyleContext *context,
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cairo_t *cr,
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gdouble x0,
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gdouble y0,
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gdouble x1,
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gdouble y1)
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{
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g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
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g_return_if_fail (cr != NULL);
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gtk_do_render_line (context, cr, x0, y0, x1, y1);
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}
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/**
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* gtk_render_handle:
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* @context: a #GtkStyleContext
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* @cr: a #cairo_t
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* @x: X origin of the rectangle
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* @y: Y origin of the rectangle
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* @width: rectangle width
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* @height: rectangle height
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*
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* Renders a handle (as in #GtkPaned and
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* #GtkWindow’s resize grip), in the rectangle
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* determined by @x, @y, @width, @height.
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*
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* Handles rendered for the paned and grip classes:
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*
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* 
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**/
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void
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gtk_render_handle (GtkStyleContext *context,
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cairo_t *cr,
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gdouble x,
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gdouble y,
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gdouble width,
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gdouble height)
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{
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g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
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g_return_if_fail (cr != NULL);
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if (width <= 0 || height <= 0)
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return;
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gtk_render_background (context, cr, x, y, width, height);
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gtk_render_frame (context, cr, x, y, width, height);
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gtk_do_render_icon (context, cr, x, y, width, height);
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}
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/**
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* gtk_render_activity:
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* @context: a #GtkStyleContext
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* @cr: a #cairo_t
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* @x: X origin of the rectangle
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* @y: Y origin of the rectangle
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* @width: rectangle width
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* @height: rectangle height
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*
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* Renders an activity indicator (such as in #GtkSpinner).
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* The state %GTK_STATE_FLAG_CHECKED determines whether there is
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* activity going on.
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**/
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void
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gtk_render_activity (GtkStyleContext *context,
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cairo_t *cr,
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gdouble x,
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gdouble y,
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gdouble width,
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gdouble height)
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{
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g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
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g_return_if_fail (cr != NULL);
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if (width <= 0 || height <= 0)
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return;
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gtk_do_render_icon (context, cr, x, y, width, height);
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}
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/**
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* gtk_render_icon:
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* @context: a #GtkStyleContext
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* @cr: a #cairo_t
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* @texture: a #GdkTexture containing the icon to draw
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* @x: X position for the @texture
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* @y: Y position for the @texture
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*
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* Renders the icon in @texture at the specified @x and @y coordinates.
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*
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* This function will render the icon in @texture at exactly its size,
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* regardless of scaling factors, which may not be appropriate when
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* drawing on displays with high pixel densities.
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*
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**/
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void
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gtk_render_icon (GtkStyleContext *context,
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cairo_t *cr,
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GdkTexture *texture,
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gdouble x,
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gdouble y)
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{
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GtkSnapshot *snapshot;
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GskRenderNode *node;
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snapshot = gtk_snapshot_new ();
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gtk_css_style_snapshot_icon_paintable (gtk_style_context_lookup_style (context),
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snapshot,
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GDK_PAINTABLE (texture),
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gdk_texture_get_width (texture),
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gdk_texture_get_height (texture));
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node = gtk_snapshot_free_to_node (snapshot);
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if (node == NULL)
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return;
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cairo_save (cr);
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cairo_translate (cr, x, y);
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gsk_render_node_draw (node, cr);
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cairo_restore (cr);
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}
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