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themingbackgorund: render all background layers

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Now that background properties are arrays, use them in
GtkThemingBackground when rendering.
This commit is contained in:
Cosimo Cecchi
2012-05-11 10:25:55 -04:00
parent 214809ece2
commit 9cdff6ed67
2 changed files with 108 additions and 43 deletions
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143
gtk/gtkthemingbackground.c
View File

@ -42,6 +42,14 @@
*/
#include "fallback-c89.c"
typedef struct {
cairo_rectangle_t image_rect;
GtkCssImage *image;
GtkRoundedBox clip_box;
gint idx;
} GtkThemingBackgroundLayer;
static void
_gtk_theming_background_apply_window_background (GtkThemingBackground *bg,
cairo_t *cr)
@ -55,11 +63,12 @@ _gtk_theming_background_apply_window_background (GtkThemingBackground *bg,
}
static void
_gtk_theming_background_apply_origin (GtkThemingBackground *bg)
_gtk_theming_background_layer_apply_origin (GtkThemingBackground *bg,
GtkThemingBackgroundLayer *layer)
{
cairo_rectangle_t image_rect;
GtkCssValue *value = _gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_ORIGIN);
GtkCssArea origin = _gtk_css_area_value_get (_gtk_css_array_value_get_nth (value, 0));
GtkCssArea origin = _gtk_css_area_value_get (_gtk_css_array_value_get_nth (value, layer->idx));
/* The default size of the background image depends on the
background-origin value as this affects the top left
@ -88,24 +97,23 @@ _gtk_theming_background_apply_origin (GtkThemingBackground *bg)
/* XXX: image_rect might have negative width/height here.
* Do we need to do something about it? */
bg->image_rect = image_rect;
layer->image_rect = image_rect;
}
static void
_gtk_theming_background_apply_clip (GtkThemingBackground *bg)
_gtk_theming_background_apply_clip (GtkThemingBackground *bg,
GtkRoundedBox *box,
GtkCssArea clip)
{
GtkCssValue *value = _gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_CLIP);
GtkCssArea clip = _gtk_css_area_value_get (_gtk_css_array_value_get_nth (value, 0));
if (clip == GTK_CSS_AREA_PADDING_BOX)
{
_gtk_rounded_box_shrink (&bg->clip_box,
_gtk_rounded_box_shrink (box,
bg->border.top, bg->border.right,
bg->border.bottom, bg->border.left);
}
else if (clip == GTK_CSS_AREA_CONTENT_BOX)
{
_gtk_rounded_box_shrink (&bg->clip_box,
_gtk_rounded_box_shrink (box,
bg->border.top + bg->padding.top,
bg->border.right + bg->padding.right,
bg->border.bottom + bg->padding.bottom,
@ -114,35 +122,68 @@ _gtk_theming_background_apply_clip (GtkThemingBackground *bg)
}
static void
_gtk_theming_background_paint (GtkThemingBackground *bg,
cairo_t *cr)
_gtk_theming_background_layer_apply_clip (GtkThemingBackground *bg,
GtkThemingBackgroundLayer *layer)
{
cairo_save (cr);
GtkCssValue *value = _gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_CLIP);
GtkCssArea clip = _gtk_css_area_value_get (_gtk_css_array_value_get_nth (value, layer->idx));
_gtk_rounded_box_path (&bg->clip_box, cr);
_gtk_theming_background_apply_clip (bg, &layer->clip_box, clip);
}
static void
_gtk_theming_background_paint_color (GtkThemingBackground *bg,
cairo_t *cr,
GtkCssValue *background_image)
{
GtkRoundedBox clip_box;
gint n_values = _gtk_css_array_value_get_n_values (background_image);
GtkCssArea clip = _gtk_css_area_value_get
(_gtk_css_array_value_get_nth
(_gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_CLIP),
n_values - 1));
clip_box = bg->border_box;
_gtk_theming_background_apply_clip (bg, &clip_box, clip);
cairo_save (cr);
_gtk_rounded_box_path (&clip_box, cr);
cairo_clip (cr);
gdk_cairo_set_source_rgba (cr, &bg->bg_color);
cairo_paint (cr);
if (bg->image
&& bg->image_rect.width > 0
&& bg->image_rect.height > 0)
cairo_restore (cr);
}
static void
_gtk_theming_background_paint_layer (GtkThemingBackground *bg,
GtkThemingBackgroundLayer *layer,
cairo_t *cr)
{
cairo_save (cr);
_gtk_rounded_box_path (&layer->clip_box, cr);
cairo_clip (cr);
if (layer->image
&& layer->image_rect.width > 0
&& layer->image_rect.height > 0)
{
const GtkCssValue *pos, *repeat;
double image_width, image_height;
double width, height;
GtkCssRepeatStyle hrepeat, vrepeat;
pos = _gtk_css_array_value_get_nth (_gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_POSITION), 0);
repeat = _gtk_css_array_value_get_nth (_gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_REPEAT), 0);
pos = _gtk_css_array_value_get_nth (_gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_POSITION), layer->idx);
repeat = _gtk_css_array_value_get_nth (_gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_REPEAT), layer->idx);
hrepeat = _gtk_css_background_repeat_value_get_x (repeat);
vrepeat = _gtk_css_background_repeat_value_get_y (repeat);
width = bg->image_rect.width;
height = bg->image_rect.height;
width = layer->image_rect.width;
height = layer->image_rect.height;
_gtk_css_bg_size_value_compute_size (_gtk_css_array_value_get_nth (_gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_SIZE), 0),
bg->image,
_gtk_css_bg_size_value_compute_size (_gtk_css_array_value_get_nth (_gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_SIZE), layer->idx),
layer->image,
width,
height,
&image_width,
@ -154,7 +195,7 @@ _gtk_theming_background_paint (GtkThemingBackground *bg,
if (image_height == height)
vrepeat = GTK_CSS_REPEAT_STYLE_NO_REPEAT;
cairo_translate (cr, bg->image_rect.x, bg->image_rect.y);
cairo_translate (cr, layer->image_rect.x, layer->image_rect.y);
if (hrepeat == GTK_CSS_REPEAT_STYLE_NO_REPEAT && vrepeat == GTK_CSS_REPEAT_STYLE_NO_REPEAT)
{
@ -162,7 +203,7 @@ _gtk_theming_background_paint (GtkThemingBackground *bg,
_gtk_css_position_value_get_x (pos, width - image_width),
_gtk_css_position_value_get_y (pos, height - image_height));
/* shortcut for normal case */
_gtk_css_image_draw (bg->image, cr, image_width, image_height);
_gtk_css_image_draw (layer->image, cr, image_width, image_height);
}
else
{
@ -234,7 +275,7 @@ _gtk_theming_background_paint (GtkThemingBackground *bg,
cairo_translate (cr2,
0.5 * (surface_width - image_width),
0.5 * (surface_height - image_height));
_gtk_css_image_draw (bg->image, cr2, image_width, image_height);
_gtk_css_image_draw (layer->image, cr2, image_width, image_height);
cairo_destroy (cr2);
cairo_set_source_surface (cr, surface,
@ -263,6 +304,21 @@ _gtk_theming_background_apply_shadow (GtkThemingBackground *bg,
&bg->padding_box);
}
static void
_gtk_theming_background_init_layer (GtkThemingBackground *bg,
GtkThemingBackgroundLayer *layer,
GtkCssValue *background_image,
gint idx)
{
layer->idx = idx;
layer->clip_box = bg->border_box;
_gtk_theming_background_layer_apply_clip (bg, layer);
_gtk_theming_background_layer_apply_origin (bg, layer);
layer->image = _gtk_css_image_value_get_image (_gtk_css_array_value_get_nth (background_image, layer->idx));
}
static void
_gtk_theming_background_init_context (GtkThemingBackground *bg)
{
@ -280,19 +336,13 @@ _gtk_theming_background_init_context (GtkThemingBackground *bg)
* In the future we might want to support different origins or clips, but
* right now we just shrink to the default.
*/
_gtk_rounded_box_init_rect (&bg->padding_box, 0, 0, bg->paint_area.width, bg->paint_area.height);
_gtk_rounded_box_init_rect (&bg->border_box, 0, 0, bg->paint_area.width, bg->paint_area.height);
_gtk_rounded_box_apply_border_radius_for_context (&bg->border_box, bg->context, bg->junction);
_gtk_rounded_box_apply_border_radius_for_context (&bg->padding_box, bg->context, bg->junction);
bg->clip_box = bg->padding_box;
bg->padding_box = bg->border_box;
_gtk_rounded_box_shrink (&bg->padding_box,
bg->border.top, bg->border.right,
bg->border.bottom, bg->border.left);
_gtk_theming_background_apply_clip (bg);
_gtk_theming_background_apply_origin (bg);
bg->image = _gtk_css_image_value_get_image (_gtk_css_array_value_get_nth (_gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_IMAGE), 0));
}
void
@ -332,7 +382,6 @@ _gtk_theming_background_init_from_context (GtkThemingBackground *bg,
bg->paint_area.width = width;
bg->paint_area.height = height;
bg->image = NULL;
bg->junction = junction;
_gtk_theming_background_init_context (bg);
@ -342,11 +391,24 @@ void
_gtk_theming_background_render (GtkThemingBackground *bg,
cairo_t *cr)
{
gint idx;
GtkThemingBackgroundLayer layer;
GtkCssValue *background_image;
background_image = _gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_IMAGE);
cairo_save (cr);
cairo_translate (cr, bg->paint_area.x, bg->paint_area.y);
_gtk_theming_background_apply_window_background (bg, cr);
_gtk_theming_background_paint (bg, cr);
_gtk_theming_background_paint_color (bg, cr, background_image);
for (idx = _gtk_css_array_value_get_n_values (background_image) - 1; idx >= 0; idx--)
{
_gtk_theming_background_init_layer (bg, &layer, background_image, idx);
_gtk_theming_background_paint_layer (bg, &layer, cr);
}
_gtk_theming_background_apply_shadow (bg, cr);
cairo_restore (cr);
@ -355,5 +417,12 @@ _gtk_theming_background_render (GtkThemingBackground *bg,
gboolean
_gtk_theming_background_has_background_image (GtkThemingBackground *bg)
{
return (bg->image != NULL) ? TRUE : FALSE;
GtkCssImage *image;
GtkCssValue *value = _gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_IMAGE);
if (_gtk_css_array_value_get_n_values (value) == 0)
return FALSE;
image = _gtk_css_image_value_get_image (_gtk_css_array_value_get_nth (value, 0));
return (image != NULL);
}

8
gtk/gtkthemingbackgroundprivate.h
View File

@ -35,14 +35,10 @@ struct _GtkThemingBackground {
GtkStyleContext *context;
cairo_rectangle_t paint_area;
cairo_rectangle_t image_rect;
GtkRoundedBox border_box;
GtkRoundedBox padding_box;
GtkJunctionSides junction;
GtkCssImage *image;
GtkRoundedBox padding_box;
GtkRoundedBox clip_box;
GtkStateFlags flags;
GtkBorder border;
GtkBorder padding;