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label: Convert to gadgets

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This removes some hairy code handling with borders and padding,
which may or may not be correct. The examples in testheightforwidth
all continue to work, and min-width now works for labels.
This commit is contained in:
Matthias Clasen 2015-12-03 14:22:50 -05:00
parent ff9f3c108f
commit a81267c28e
1 changed files with 155 additions and 157 deletions
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312
gtk/gtklabel.c
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@ -55,6 +55,7 @@
#include "gtkwidgetprivate.h"
#include "gtkwindow.h"
#include "gtkcssnodeprivate.h"
#include "gtkcsscustomgadgetprivate.h"
#include "gtkwidgetprivate.h"
#include "a11y/gtklabelaccessibleprivate.h"
@ -250,6 +251,7 @@ struct _GtkLabelPrivate
GtkLabelSelectionInfo *select_info;
GtkWidget *mnemonic_widget;
GtkWindow *mnemonic_window;
GtkCssGadget *gadget;
PangoAttrList *attrs;
PangoAttrList *markup_attrs;
@ -566,6 +568,22 @@ static void gtk_label_get_preferred_height_and_baseline_for_width (GtkWidget
gint *minimum_baseline,
gint *natural_baseline);
static void gtk_label_measure (GtkCssGadget *gadget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline,
gpointer unused);
static gboolean gtk_label_render (GtkCssGadget *gadget,
cairo_t *cr,
int x,
int y,
int width,
int height,
gpointer data);
static GtkBuildableIface *buildable_parent_iface = NULL;
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
@ -1373,6 +1391,14 @@ gtk_label_init (GtkLabel *label)
priv->mnemonics_visible = TRUE;
gtk_label_set_text (label, "");
priv->gadget = gtk_css_custom_gadget_new_for_node (gtk_widget_get_css_node (GTK_WIDGET (label)),
GTK_WIDGET (label),
gtk_label_measure,
NULL,
gtk_label_render,
NULL,
NULL);
}
@ -3279,6 +3305,8 @@ gtk_label_finalize (GObject *object)
gtk_label_clear_links (label);
g_free (priv->select_info);
g_clear_object (&priv->gadget);
G_OBJECT_CLASS (gtk_label_parent_class)->finalize (object);
}
@ -3605,13 +3633,12 @@ gtk_label_get_request_mode (GtkWidget *widget)
static void
get_size_for_allocation (GtkLabel *label,
GtkOrientation orientation,
gint allocation,
gint *minimum_size,
gint *natural_size,
gint *minimum_baseline,
gint *natural_baseline)
get_size_for_allocation (GtkLabel *label,
gint allocation,
gint *minimum_size,
gint *natural_size,
gint *minimum_baseline,
gint *natural_baseline)
{
PangoLayout *layout;
gint text_height, baseline;
@ -3740,7 +3767,6 @@ gtk_label_get_preferred_size (GtkWidget *widget,
GtkLabelPrivate *priv = label->priv;
PangoRectangle widest_rect;
PangoRectangle smallest_rect;
GtkBorder border;
if (minimum_baseline)
*minimum_baseline = -1;
@ -3786,10 +3812,6 @@ gtk_label_get_preferred_size (GtkWidget *widget,
smallest_rect.width = PANGO_PIXELS_CEIL (smallest_rect.width);
smallest_rect.height = PANGO_PIXELS_CEIL (smallest_rect.height);
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
_gtk_misc_get_padding_and_border (GTK_MISC (label), &border);
G_GNUC_END_IGNORE_DEPRECATIONS
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
/* Note, we cant use get_size_for_allocation() when rotating
@ -3802,7 +3824,6 @@ G_GNUC_END_IGNORE_DEPRECATIONS
* required width for the minimum height.
*/
get_size_for_allocation (label,
GTK_ORIENTATION_VERTICAL,
smallest_rect.height,
minimum_size, natural_size,
NULL, NULL);
@ -3814,9 +3835,6 @@ G_GNUC_END_IGNORE_DEPRECATIONS
*minimum_size = smallest_rect.width;
*natural_size = widest_rect.width;
}
*minimum_size += border.left + border.right;
*natural_size += border.left + border.right;
}
else /* GTK_ORIENTATION_VERTICAL */
{
@ -3830,7 +3848,6 @@ G_GNUC_END_IGNORE_DEPRECATIONS
* height for the minimum width.
*/
get_size_for_allocation (label,
GTK_ORIENTATION_HORIZONTAL,
widest_rect.width,
minimum_size, natural_size,
minimum_baseline, natural_baseline);
@ -3851,24 +3868,49 @@ G_GNUC_END_IGNORE_DEPRECATIONS
*minimum_size = MIN (smallest_rect.height, widest_rect.height);
*natural_size = MAX (smallest_rect.height, widest_rect.height);
}
*minimum_size += border.top + border.bottom;
*natural_size += border.top + border.bottom;
if (minimum_baseline && *minimum_baseline != -1)
*minimum_baseline += border.top;
if (natural_baseline && *natural_baseline != -1)
*natural_baseline += border.top;
}
}
static void
gtk_label_measure (GtkCssGadget *gadget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline,
gpointer unused)
{
GtkWidget *widget;
GtkLabel *label;
GtkLabelPrivate *priv;
widget = gtk_css_gadget_get_owner (gadget);
label = GTK_LABEL (widget);
priv = label->priv;
if ((orientation == GTK_ORIENTATION_VERTICAL && for_size != -1 && priv->wrap && (priv->angle == 0 || priv->angle == 180 || priv->angle == 360)) ||
(orientation == GTK_ORIENTATION_HORIZONTAL && priv->wrap && (priv->angle == 90 || priv->angle == 270)))
{
if (priv->wrap)
gtk_label_clear_layout (label);
get_size_for_allocation (label, MAX (1, for_size), minimum, natural, minimum_baseline, natural_baseline);
}
else
gtk_label_get_preferred_size (widget, orientation, minimum, natural, minimum_baseline, natural_baseline);
}
static void
gtk_label_get_preferred_width (GtkWidget *widget,
gint *minimum_size,
gint *natural_size)
{
gtk_label_get_preferred_size (widget, GTK_ORIENTATION_HORIZONTAL, minimum_size, natural_size, NULL, NULL);
gtk_css_gadget_get_preferred_size (GTK_LABEL (widget)->priv->gadget,
GTK_ORIENTATION_HORIZONTAL,
-1,
minimum_size, natural_size,
NULL, NULL);
}
static void
@ -3876,7 +3918,11 @@ gtk_label_get_preferred_height (GtkWidget *widget,
gint *minimum_size,
gint *natural_size)
{
gtk_label_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, minimum_size, natural_size, NULL, NULL);
gtk_css_gadget_get_preferred_size (GTK_LABEL (widget)->priv->gadget,
GTK_ORIENTATION_VERTICAL,
-1,
minimum_size, natural_size,
NULL, NULL);
}
static void
@ -3885,33 +3931,24 @@ gtk_label_get_preferred_width_for_height (GtkWidget *widget,
gint *minimum_width,
gint *natural_width)
{
GtkLabel *label = GTK_LABEL (widget);
GtkLabelPrivate *priv = label->priv;
gtk_css_gadget_get_preferred_size (GTK_LABEL (widget)->priv->gadget,
GTK_ORIENTATION_HORIZONTAL,
height,
minimum_width, natural_width,
NULL, NULL);
}
if (priv->wrap && (priv->angle == 90 || priv->angle == 270))
{
GtkBorder border;
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
_gtk_misc_get_padding_and_border (GTK_MISC (label), &border);
G_GNUC_END_IGNORE_DEPRECATIONS
if (priv->wrap)
gtk_label_clear_layout (label);
get_size_for_allocation (label, GTK_ORIENTATION_VERTICAL,
MAX (1, height - border.top - border.bottom),
minimum_width, natural_width,
NULL, NULL);
if (minimum_width)
*minimum_width += border.right + border.left;
if (natural_width)
*natural_width += border.right + border.left;
}
else
GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, minimum_width, natural_width);
static void
gtk_label_get_preferred_height_for_width (GtkWidget *widget,
gint width,
gint *minimum_height,
gint *natural_height)
{
gtk_css_gadget_get_preferred_size (GTK_LABEL (widget)->priv->gadget,
GTK_ORIENTATION_VERTICAL,
width,
minimum_height, natural_height,
NULL, NULL);
}
static void
@ -3922,49 +3959,11 @@ gtk_label_get_preferred_height_and_baseline_for_width (GtkWidget *widget,
gint *minimum_baseline,
gint *natural_baseline)
{
GtkLabel *label = GTK_LABEL (widget);
GtkLabelPrivate *priv = label->priv;
if (width != -1 && priv->wrap && (priv->angle == 0 || priv->angle == 180 || priv->angle == 360))
{
GtkBorder border;
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
_gtk_misc_get_padding_and_border (GTK_MISC (label), &border);
G_GNUC_END_IGNORE_DEPRECATIONS
if (priv->wrap)
gtk_label_clear_layout (label);
get_size_for_allocation (label, GTK_ORIENTATION_HORIZONTAL,
MAX (1, width - border.left - border.right),
minimum_height, natural_height,
minimum_baseline, natural_baseline);
if (minimum_baseline && *minimum_baseline != -1)
*minimum_baseline += border.top;
if (natural_baseline && *natural_baseline != -1)
*natural_baseline += border.top;
if (minimum_height)
*minimum_height += border.top + border.bottom;
if (natural_height)
*natural_height += border.top + border.bottom;
}
else
gtk_label_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, minimum_height, natural_height, minimum_baseline, natural_baseline);
}
static void
gtk_label_get_preferred_height_for_width (GtkWidget *widget,
gint width,
gint *minimum_height,
gint *natural_height)
{
gtk_label_get_preferred_height_and_baseline_for_width (widget, width,
minimum_height, natural_height,
NULL, NULL);
gtk_css_gadget_get_preferred_size (GTK_LABEL (widget)->priv->gadget,
GTK_ORIENTATION_VERTICAL,
width,
minimum_height, natural_height,
minimum_baseline, natural_baseline);
}
static void
@ -4078,7 +4077,7 @@ gtk_label_size_allocate (GtkWidget *widget,
{
GtkLabel *label = GTK_LABEL (widget);
GtkLabelPrivate *priv = label->priv;
GdkRectangle clip_rect;
GdkRectangle clip_rect, clip;
GTK_WIDGET_CLASS (gtk_label_parent_class)->size_allocate (widget, allocation);
@ -4086,15 +4085,19 @@ gtk_label_size_allocate (GtkWidget *widget,
gtk_label_update_layout_width (label);
if (priv->select_info && priv->select_info->window)
{
gdk_window_move_resize (priv->select_info->window,
allocation->x,
allocation->y,
allocation->width,
allocation->height);
}
gdk_window_move_resize (priv->select_info->window,
allocation->x,
allocation->y,
allocation->width,
allocation->height);
gtk_css_gadget_allocate (priv->gadget,
allocation,
gtk_widget_get_allocated_baseline (widget),
&clip);
gtk_label_get_ink_rect (label, &clip_rect);
gdk_rectangle_union (&clip_rect, &clip, &clip_rect);
_gtk_widget_set_simple_clip (widget, &clip_rect);
}
@ -4259,32 +4262,46 @@ static gboolean
gtk_label_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkLabel *label = GTK_LABEL (widget);
GtkLabelPrivate *priv = label->priv;
GtkLabelSelectionInfo *info = priv->select_info;
GtkAllocation allocation;
gtk_css_gadget_draw (GTK_LABEL (widget)->priv->gadget, cr);
return FALSE;
}
static void layout_to_window_coords (GtkLabel *label,
gint *x,
gint *y);
static gboolean
gtk_label_render (GtkCssGadget *gadget,
cairo_t *cr,
int x,
int y,
int width,
int height,
gpointer data)
{
GtkWidget *widget;
GtkLabel *label;
GtkLabelPrivate *priv;
GtkLabelSelectionInfo *info;
GtkStyleContext *context;
gint x, y;
gint lx, ly;
widget = gtk_css_gadget_get_owner (gadget);
label = GTK_LABEL (widget);
priv = label->priv;
info = priv->select_info;
gtk_label_ensure_layout (label);
context = gtk_widget_get_style_context (widget);
gtk_widget_get_allocation (widget, &allocation);
gtk_render_background (context, cr,
0, 0,
allocation.width, allocation.height);
gtk_render_frame (context, cr,
0, 0,
allocation.width, allocation.height);
if (priv->text && (*priv->text != '\0'))
{
get_layout_location (label, &x, &y);
lx = ly = 0;
layout_to_window_coords (label, &lx, &ly);
cairo_translate (cr, -allocation.x, -allocation.y);
gtk_render_layout (context, cr, x, y, priv->layout);
gtk_render_layout (context, cr, lx, ly, priv->layout);
if (info && (info->selection_anchor != info->selection_end))
{
@ -4301,10 +4318,7 @@ gtk_label_draw (GtkWidget *widget,
range[1] = tmp;
}
clip = gdk_pango_layout_get_clip_region (priv->layout,
x, y,
range,
1);
clip = gdk_pango_layout_get_clip_region (priv->layout, lx, ly, range, 1);
cairo_save (cr);
gtk_style_context_save_to_node (context, info->selection_node);
@ -4312,11 +4326,8 @@ gtk_label_draw (GtkWidget *widget,
gdk_cairo_region (cr, clip);
cairo_clip (cr);
gtk_render_background (context, cr,
allocation.x, allocation.y,
allocation.width, allocation.height);
gtk_render_layout (context, cr, x, y, priv->layout);
gtk_render_background (context, cr, x, y, width, height);
gtk_render_layout (context, cr, lx, ly, priv->layout);
gtk_style_context_restore (context);
cairo_restore (cr);
@ -4338,7 +4349,7 @@ gtk_label_draw (GtkWidget *widget,
cursor_direction = get_cursor_direction (label);
gtk_render_insertion_cursor (context, cr,
x, y,
lx, ly,
priv->layout, priv->select_info->selection_end,
cursor_direction);
}
@ -4354,22 +4365,14 @@ gtk_label_draw (GtkWidget *widget,
cairo_save (cr);
gtk_style_context_save_to_node (context, active_link->cssnode);
clip = gdk_pango_layout_get_clip_region (priv->layout,
x, y,
range,
1);
clip = gdk_pango_layout_get_clip_region (priv->layout, lx, ly, range, 1);
gdk_cairo_region (cr, clip);
cairo_clip (cr);
cairo_region_destroy (clip);
gtk_render_background (context, cr,
allocation.x, allocation.y,
allocation.width, allocation.height);
gtk_render_layout (context, cr,
x, y,
priv->layout);
gtk_render_background (context, cr, x, y, width, height);
gtk_render_layout (context, cr, lx, ly, priv->layout);
gtk_style_context_restore (context);
cairo_restore (cr);
@ -4380,15 +4383,10 @@ gtk_label_draw (GtkWidget *widget,
range[0] = focus_link->start;
range[1] = focus_link->end;
clip = gdk_pango_layout_get_clip_region (priv->layout,
x, y,
range,
1);
clip = gdk_pango_layout_get_clip_region (priv->layout, lx, ly, range, 1);
cairo_region_get_extents (clip, &rect);
gtk_render_focus (context, cr,
rect.x, rect.y,
rect.width, rect.height);
gtk_render_focus (context, cr, rect.x, rect.y, rect.width, rect.height);
cairo_region_destroy (clip);
}
@ -4605,7 +4603,6 @@ window_to_layout_coords (GtkLabel *label,
}
}
#if 0
static void
layout_to_window_coords (GtkLabel *label,
gint *x,
@ -4613,25 +4610,26 @@ layout_to_window_coords (GtkLabel *label,
{
gint lx, ly;
GtkWidget *widget;
GtkAllocation allocation;
widget = GTK_WIDGET (label);
/* get layout location in widget->window coords */
get_layout_location (label, &lx, &ly);
gtk_widget_get_allocation (widget, &allocation);
if (x)
{
*x += lx; /* go to widget->window */
*x -= widget->allocation.x; /* go to selection window */
*x += lx; /* go to widget->window */
*x -= allocation.x; /* go to selection window */
}
if (y)
{
*y += ly; /* go to widget->window */
*y -= widget->allocation.y; /* go to selection window */
*y += ly; /* go to widget->window */
*y -= allocation.y; /* go to selection window */
}
}
#endif
static gboolean
get_layout_index (GtkLabel *label,