Commit cc49e044 authored by Christian Hergert's avatar Christian Hergert
Browse files

native: add API to update opaque region

This abstracts the machinery to update the opaque region for a GtkWindow
into GtkNative so it may be used from other native impelementations such
as GtkPopover.

Related #4689
parent 90bccf4e
......@@ -19,10 +19,17 @@
#include "config.h"
#include "gtknativeprivate.h"
#include "gtkwidgetprivate.h"
#include <math.h>
#include "gtkintl.h"
#include "gtkcssboxesimplprivate.h"
#include "gtkcsscolorvalueprivate.h"
#include "gtkcsscornervalueprivate.h"
#include "gtkcssnodeprivate.h"
#include "gtkcssshadowvalueprivate.h"
#include "gtknativeprivate.h"
#include "gtkwidgetprivate.h"
#include "gdk/gdksurfaceprivate.h"
......@@ -297,3 +304,181 @@ gtk_native_queue_relayout (GtkNative *self)
gdk_frame_clock_request_phase (clock, GDK_FRAME_CLOCK_PHASE_UPDATE);
gdk_surface_request_layout (surface);
}
static void
corner_rect (const GtkCssValue *value,
cairo_rectangle_int_t *rect)
{
rect->width = _gtk_css_corner_value_get_x (value, 100);
rect->height = _gtk_css_corner_value_get_y (value, 100);
}
static void
subtract_decoration_corners_from_region (cairo_region_t *region,
cairo_rectangle_int_t *extents,
const GtkCssStyle *style)
{
cairo_rectangle_int_t rect;
corner_rect (style->border->border_top_left_radius, &rect);
rect.x = extents->x;
rect.y = extents->y;
cairo_region_subtract_rectangle (region, &rect);
corner_rect (style->border->border_top_right_radius, &rect);
rect.x = extents->x + extents->width - rect.width;
rect.y = extents->y;
cairo_region_subtract_rectangle (region, &rect);
corner_rect (style->border->border_bottom_left_radius, &rect);
rect.x = extents->x;
rect.y = extents->y + extents->height - rect.height;
cairo_region_subtract_rectangle (region, &rect);
corner_rect (style->border->border_bottom_right_radius, &rect);
rect.x = extents->x + extents->width - rect.width;
rect.y = extents->y + extents->height - rect.height;
cairo_region_subtract_rectangle (region, &rect);
}
static int
get_translucent_border_edge (const GtkCssValue *color,
const GtkCssValue *border_color,
const GtkCssValue *border_width)
{
if (border_color == NULL)
border_color = color;
if (!gdk_rgba_is_opaque (gtk_css_color_value_get_rgba (border_color)))
return round (_gtk_css_number_value_get (border_width, 100));
return 0;
}
static void
get_translucent_border_width (GtkWidget *widget,
GtkBorder *border)
{
GtkCssNode *css_node = gtk_widget_get_css_node (widget);
GtkCssStyle *style = gtk_css_node_get_style (css_node);
border->top = get_translucent_border_edge (style->core->color,
style->border->border_top_color,
style->border->border_top_width);
border->bottom = get_translucent_border_edge (style->core->color,
style->border->border_bottom_color,
style->border->border_bottom_width);
border->left = get_translucent_border_edge (style->core->color,
style->border->border_left_color,
style->border->border_left_width);
border->right = get_translucent_border_edge (style->core->color,
style->border->border_right_color,
style->border->border_right_width);
}
static gboolean
get_opaque_rect (GtkWidget *widget,
const GtkCssStyle *style,
cairo_rectangle_int_t *rect)
{
gboolean is_opaque = gdk_rgba_is_opaque (gtk_css_color_value_get_rgba (style->background->background_color));
if (is_opaque && gtk_widget_get_opacity (widget) < 1.0)
is_opaque = FALSE;
if (is_opaque)
{
const graphene_rect_t *border_rect;
GtkCssBoxes css_boxes;
GtkBorder border;
gtk_css_boxes_init (&css_boxes, widget);
border_rect = gtk_css_boxes_get_border_rect (&css_boxes);
get_translucent_border_width (widget, &border);
rect->x = border_rect->origin.x + border.left;
rect->y = border_rect->origin.y + border.top;
rect->width = border_rect->size.width - border.left - border.right;
rect->height = border_rect->size.height - border.top - border.bottom;
}
return is_opaque;
}
static void
get_shadow_width (GtkWidget *widget,
GtkBorder *shadow_width,
int resize_handle_size)
{
GtkCssNode *css_node = gtk_widget_get_css_node (widget);
const GtkCssStyle *style = gtk_css_node_get_style (css_node);
gtk_css_shadow_value_get_extents (style->background->box_shadow, shadow_width);
shadow_width->left = MAX (shadow_width->left, resize_handle_size);
shadow_width->top = MAX (shadow_width->top, resize_handle_size);
shadow_width->bottom = MAX (shadow_width->bottom, resize_handle_size);
shadow_width->right = MAX (shadow_width->right, resize_handle_size);
}
void
gtk_native_update_opaque_region (GtkNative *native,
GtkWidget *contents,
gboolean subtract_decoration_corners,
gboolean subtract_shadow,
int resize_handle_size)
{
cairo_rectangle_int_t rect;
cairo_region_t *opaque_region = NULL;
const GtkCssStyle *style;
GtkCssNode *css_node;
GdkSurface *surface;
GtkBorder shadow;
g_return_if_fail (GTK_IS_NATIVE (native));
g_return_if_fail (!contents || GTK_IS_WIDGET (contents));
if (contents == NULL)
contents = GTK_WIDGET (native);
if (!_gtk_widget_get_realized (GTK_WIDGET (native)) ||
!_gtk_widget_get_realized (contents))
return;
css_node = gtk_widget_get_css_node (contents);
if (subtract_shadow)
get_shadow_width (contents, &shadow, resize_handle_size);
else
shadow = (GtkBorder) {0, 0, 0, 0};
surface = gtk_native_get_surface (native);
style = gtk_css_node_get_style (css_node);
if (get_opaque_rect (contents, style, &rect))
{
double native_x, native_y;
gtk_native_get_surface_transform (native, &native_x, &native_y);
rect.x += native_x;
rect.y += native_y;
if (contents != GTK_WIDGET (native))
{
double contents_x, contents_y;
gtk_widget_translate_coordinates (contents, GTK_WIDGET (native), 0, 0, &contents_x, &contents_y);
rect.x += contents_x;
rect.y += contents_y;
}
opaque_region = cairo_region_create_rectangle (&rect);
if (subtract_decoration_corners)
subtract_decoration_corners_from_region (opaque_region, &rect, style);
}
gdk_surface_set_opaque_region (surface, opaque_region);
cairo_region_destroy (opaque_region);
}
......@@ -29,6 +29,11 @@ struct _GtkNativeInterface
};
void gtk_native_queue_relayout (GtkNative *native);
void gtk_native_update_opaque_region (GtkNative *native,
GtkWidget *contents,
gboolean subtract_decoration_corners,
gboolean subtract_shadow,
int resize_handle_size);
G_END_DECLS
......
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment