*/
#include "fallback-c89.c"
-static void
-_gtk_theming_background_apply_window_background (GtkThemingBackground *bg,
- cairo_t *cr)
+static const GtkRoundedBox *
+gtk_theming_background_get_box (GtkThemingBackground *bg,
+ GtkCssArea area)
{
- if (gtk_style_context_has_class (bg->context, "background"))
+ switch (area)
{
- cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.0); /* transparent */
- cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
- cairo_paint (cr);
- }
+ case GTK_CSS_AREA_BORDER_BOX:
+ return &bg->border_box;
+ case GTK_CSS_AREA_PADDING_BOX:
+ return &bg->padding_box;
+ case GTK_CSS_AREA_CONTENT_BOX:
+ return &bg->content_box;
+ default:
+ g_return_val_if_reached (&bg->border_box);
+ }
}
static void
-_gtk_theming_background_apply_origin (GtkThemingBackground *bg)
+_gtk_theming_background_paint_color (GtkThemingBackground *bg,
+ cairo_t *cr,
+ GtkCssValue *background_image)
{
- GtkCssArea origin;
- cairo_rectangle_t image_rect;
-
- origin = _gtk_css_area_value_get (_gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_CLIP));
-
- /* The default size of the background image depends on the
- background-origin value as this affects the top left
- and the bottom right corners. */
- switch (origin) {
- case GTK_CSS_AREA_BORDER_BOX:
- image_rect.x = 0;
- image_rect.y = 0;
- image_rect.width = bg->paint_area.width;
- image_rect.height = bg->paint_area.height;
- break;
- case GTK_CSS_AREA_CONTENT_BOX:
- image_rect.x = bg->border.left + bg->padding.left;
- image_rect.y = bg->border.top + bg->padding.top;
- image_rect.width = bg->paint_area.width - bg->border.left - bg->border.right - bg->padding.left - bg->padding.right;
- image_rect.height = bg->paint_area.height - bg->border.top - bg->border.bottom - bg->padding.top - bg->padding.bottom;
- break;
- case GTK_CSS_AREA_PADDING_BOX:
- default:
- image_rect.x = bg->border.left;
- image_rect.y = bg->border.top;
- image_rect.width = bg->paint_area.width - bg->border.left - bg->border.right;
- image_rect.height = bg->paint_area.height - bg->border.top - bg->border.bottom;
- break;
- }
+ 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));
- /* XXX: image_rect might have negative width/height here.
- * Do we need to do something about it? */
- bg->image_rect = image_rect;
-}
+ cairo_save (cr);
+ _gtk_rounded_box_path (gtk_theming_background_get_box (bg, clip), cr);
+ cairo_clip (cr);
-static void
-_gtk_theming_background_apply_clip (GtkThemingBackground *bg)
-{
- GtkCssArea clip = _gtk_css_area_value_get (_gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_CLIP));
+ gdk_cairo_set_source_rgba (cr, &bg->bg_color);
+ cairo_paint (cr);
- if (clip == GTK_CSS_AREA_PADDING_BOX)
- {
- _gtk_rounded_box_shrink (&bg->clip_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,
- bg->border.top + bg->padding.top,
- bg->border.right + bg->padding.right,
- bg->border.bottom + bg->padding.bottom,
- bg->border.left + bg->padding.left);
- }
+ cairo_restore (cr);
}
static void
-_gtk_theming_background_paint (GtkThemingBackground *bg,
- cairo_t *cr)
+_gtk_theming_background_paint_layer (GtkThemingBackground *bg,
+ guint idx,
+ cairo_t *cr)
{
+ GtkCssRepeatStyle hrepeat, vrepeat;
+ const GtkCssValue *pos, *repeat;
+ GtkCssImage *image;
+ const GtkRoundedBox *origin;
+ double image_width, image_height;
+ double width, height;
+
+ pos = _gtk_css_array_value_get_nth (_gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_POSITION), idx);
+ repeat = _gtk_css_array_value_get_nth (_gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_REPEAT), idx);
+ hrepeat = _gtk_css_background_repeat_value_get_x (repeat);
+ vrepeat = _gtk_css_background_repeat_value_get_y (repeat);
+ 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),
+ idx));
+ origin = gtk_theming_background_get_box (
+ bg,
+ _gtk_css_area_value_get (
+ _gtk_css_array_value_get_nth (
+ _gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_ORIGIN),
+ idx)));
+ width = origin->box.width;
+ height = origin->box.height;
+
+ if (image == NULL || width <= 0 || height <= 0)
+ return;
+
+ _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), idx),
+ image,
+ width,
+ height,
+ &image_width,
+ &image_height);
+
+ if (image_width <= 0 || image_height <= 0)
+ return;
+
+ /* optimization */
+ if (image_width == width)
+ hrepeat = GTK_CSS_REPEAT_STYLE_NO_REPEAT;
+ if (image_height == height)
+ vrepeat = GTK_CSS_REPEAT_STYLE_NO_REPEAT;
+
+
cairo_save (cr);
- _gtk_rounded_box_path (&bg->clip_box, cr);
+ _gtk_rounded_box_path (
+ gtk_theming_background_get_box (
+ bg,
+ _gtk_css_area_value_get (
+ _gtk_css_array_value_get_nth (
+ _gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_CLIP),
+ idx))),
+ 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_translate (cr, origin->box.x, origin->box.y);
+
+ if (hrepeat == GTK_CSS_REPEAT_STYLE_NO_REPEAT && vrepeat == GTK_CSS_REPEAT_STYLE_NO_REPEAT)
+ {
+ cairo_translate (cr,
+ _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 (image, cr, image_width, image_height);
+ }
+ else
{
- const GtkCssValue *pos, *repeat;
- double image_width, image_height;
- double width, height;
- GtkCssRepeatStyle hrepeat, vrepeat;
-
- pos = _gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_POSITION);
- repeat = _gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_REPEAT);
- 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;
-
- _gtk_css_bg_size_value_compute_size (_gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_SIZE),
- bg->image,
- width,
- height,
- &image_width,
- &image_height);
-
- /* optimization */
- if (image_width == width)
- hrepeat = GTK_CSS_REPEAT_STYLE_NO_REPEAT;
- if (image_height == height)
- vrepeat = GTK_CSS_REPEAT_STYLE_NO_REPEAT;
-
- cairo_translate (cr, bg->image_rect.x, bg->image_rect.y);
-
- if (hrepeat == GTK_CSS_REPEAT_STYLE_NO_REPEAT && vrepeat == GTK_CSS_REPEAT_STYLE_NO_REPEAT)
+ int surface_width, surface_height;
+ cairo_rectangle_t fill_rect;
+ cairo_surface_t *surface;
+ cairo_t *cr2;
+
+ /* If ‘background-repeat’ is ‘round’ for one (or both) dimensions,
+ * there is a second step. The UA must scale the image in that
+ * dimension (or both dimensions) so that it fits a whole number of
+ * times in the background positioning area. In the case of the width
+ * (height is analogous):
+ *
+ * If X ≠ 0 is the width of the image after step one and W is the width
+ * of the background positioning area, then the rounded width
+ * X' = W / round(W / X) where round() is a function that returns the
+ * nearest natural number (integer greater than zero).
+ *
+ * If ‘background-repeat’ is ‘round’ for one dimension only and if
+ * ‘background-size’ is ‘auto’ for the other dimension, then there is
+ * a third step: that other dimension is scaled so that the original
+ * aspect ratio is restored.
+ */
+ if (hrepeat == GTK_CSS_REPEAT_STYLE_ROUND)
{
- cairo_translate (cr,
- _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);
+ double n = round (width / image_width);
+
+ n = MAX (1, n);
+
+ if (vrepeat != GTK_CSS_REPEAT_STYLE_ROUND
+ /* && vsize == auto (it is by default) */)
+ image_height *= width / (image_width * n);
+ image_width = width / n;
+ }
+ if (vrepeat == GTK_CSS_REPEAT_STYLE_ROUND)
+ {
+ double n = round (height / image_height);
+
+ n = MAX (1, n);
+
+ if (hrepeat != GTK_CSS_REPEAT_STYLE_ROUND
+ /* && hsize == auto (it is by default) */)
+ image_width *= height / (image_height * n);
+ image_height = height / n;
+ }
+
+ /* if hrepeat or vrepeat is 'space', we create a somewhat larger surface
+ * to store the extra space. */
+ if (hrepeat == GTK_CSS_REPEAT_STYLE_SPACE)
+ {
+ double n = floor (width / image_width);
+ surface_width = n ? round (width / n) : 0;
+ }
+ else
+ surface_width = round (image_width);
+
+ if (vrepeat == GTK_CSS_REPEAT_STYLE_SPACE)
+ {
+ double n = floor (height / image_height);
+ surface_height = n ? round (height / n) : 0;
+ }
+ else
+ surface_height = round (image_height);
+
+ surface = cairo_surface_create_similar (cairo_get_target (cr),
+ CAIRO_CONTENT_COLOR_ALPHA,
+ surface_width, surface_height);
+ cr2 = cairo_create (surface);
+ cairo_translate (cr2,
+ 0.5 * (surface_width - image_width),
+ 0.5 * (surface_height - image_height));
+ _gtk_css_image_draw (image, cr2, image_width, image_height);
+ cairo_destroy (cr2);
+
+ cairo_set_source_surface (cr, surface,
+ _gtk_css_position_value_get_x (pos, width - image_width),
+ _gtk_css_position_value_get_y (pos, height - image_height));
+ cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_REPEAT);
+ cairo_surface_destroy (surface);
+
+ if (hrepeat == GTK_CSS_REPEAT_STYLE_NO_REPEAT)
+ {
+ fill_rect.x = _gtk_css_position_value_get_x (pos, width - image_width);
+ fill_rect.width = image_width;
+ }
+ else
+ {
+ fill_rect.x = 0;
+ fill_rect.width = width;
+ }
+
+ if (vrepeat == GTK_CSS_REPEAT_STYLE_NO_REPEAT)
+ {
+ fill_rect.y = _gtk_css_position_value_get_y (pos, height - image_height);
+ fill_rect.height = image_height;
}
else
{
- int surface_width, surface_height;
- cairo_surface_t *surface;
- cairo_t *cr2;
-
- /* If ‘background-repeat’ is ‘round’ for one (or both) dimensions,
- * there is a second step. The UA must scale the image in that
- * dimension (or both dimensions) so that it fits a whole number of
- * times in the background positioning area. In the case of the width
- * (height is analogous):
- *
- * If X ≠ 0 is the width of the image after step one and W is the width
- * of the background positioning area, then the rounded width
- * X' = W / round(W / X) where round() is a function that returns the
- * nearest natural number (integer greater than zero).
- *
- * If ‘background-repeat’ is ‘round’ for one dimension only and if
- * ‘background-size’ is ‘auto’ for the other dimension, then there is
- * a third step: that other dimension is scaled so that the original
- * aspect ratio is restored.
- */
- if (hrepeat == GTK_CSS_REPEAT_STYLE_ROUND)
- {
- double n = round (width / image_width);
-
- n = MAX (1, n);
-
- if (vrepeat != GTK_CSS_REPEAT_STYLE_ROUND
- /* && vsize == auto (it is by default) */)
- image_height *= width / (image_width * n);
- image_width = width / n;
- }
- if (vrepeat == GTK_CSS_REPEAT_STYLE_ROUND)
- {
- double n = round (height / image_height);
-
- n = MAX (1, n);
-
- if (hrepeat != GTK_CSS_REPEAT_STYLE_ROUND
- /* && hsize == auto (it is by default) */)
- image_width *= height / (image_height * n);
- image_height = height / n;
- }
-
- /* if hrepeat or vrepeat is 'space', we create a somewhat larger surface
- * to store the extra space. */
- if (hrepeat == GTK_CSS_REPEAT_STYLE_SPACE)
- {
- double n = floor (width / image_width);
- surface_width = n ? round (width / n) : 0;
- }
- else
- surface_width = round (image_width);
-
- if (vrepeat == GTK_CSS_REPEAT_STYLE_SPACE)
- {
- double n = floor (height / image_height);
- surface_height = n ? round (height / n) : 0;
- }
- else
- surface_height = round (image_height);
-
- surface = cairo_surface_create_similar (cairo_get_target (cr),
- CAIRO_CONTENT_COLOR_ALPHA,
- surface_width, surface_height);
- cr2 = cairo_create (surface);
- 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);
- cairo_destroy (cr2);
-
- cairo_set_source_surface (cr, surface,
- _gtk_css_position_value_get_x (pos, width - image_width),
- _gtk_css_position_value_get_y (pos, height - image_height));
- cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_REPEAT);
- cairo_surface_destroy (surface);
-
- cairo_rectangle (cr,
- 0, 0,
- hrepeat == GTK_CSS_REPEAT_STYLE_NO_REPEAT ? image_width : width,
- vrepeat == GTK_CSS_REPEAT_STYLE_NO_REPEAT ? image_height : height);
- cairo_fill (cr);
+ fill_rect.y = 0;
+ fill_rect.height = height;
}
+
+ cairo_rectangle (cr, fill_rect.x, fill_rect.y,
+ fill_rect.width, fill_rect.height);
+ cairo_fill (cr);
}
+
cairo_restore (cr);
}
static void
_gtk_theming_background_init_context (GtkThemingBackground *bg)
{
- bg->flags = gtk_style_context_get_state (bg->context);
+ GtkStateFlags flags = gtk_style_context_get_state (bg->context);
+ GtkBorder border, padding;
- gtk_style_context_get_border (bg->context, bg->flags, &bg->border);
- gtk_style_context_get_padding (bg->context, bg->flags, &bg->padding);
- gtk_style_context_get_background_color (bg->context, bg->flags, &bg->bg_color);
+ gtk_style_context_get_border (bg->context, flags, &border);
+ gtk_style_context_get_padding (bg->context, flags, &padding);
+ gtk_style_context_get_background_color (bg->context, flags, &bg->bg_color);
/* In the CSS box model, by default the background positioning area is
* the padding-box, i.e. all the border-box minus the borders themselves,
* 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);
+ border.top, border.right,
+ border.bottom, border.left);
- bg->image = _gtk_css_image_value_get_image (_gtk_style_context_peek_property (bg->context, GTK_CSS_PROPERTY_BACKGROUND_IMAGE));
+ bg->content_box = bg->padding_box;
+ _gtk_rounded_box_shrink (&bg->content_box,
+ padding.top, padding.right,
+ padding.bottom, padding.left);
}
void
bg->paint_area.width = width;
bg->paint_area.height = height;
- bg->image = NULL;
bg->junction = junction;
_gtk_theming_background_init_context (bg);
_gtk_theming_background_render (GtkThemingBackground *bg,
cairo_t *cr)
{
+ gint idx;
+ 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_paint_layer (bg, idx, cr);
+ }
+
_gtk_theming_background_apply_shadow (bg, cr);
cairo_restore (cr);
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);
}
projects / ~andy / gtk / blobdiff