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Diffstat (limited to 'src/compositor/meta-background.c')
| -rw-r--r-- | src/compositor/meta-background.c | 1018 |
1 files changed, 0 insertions, 1018 deletions
diff --git a/src/compositor/meta-background.c b/src/compositor/meta-background.c deleted file mode 100644 index c0d8d335d..000000000 --- a/src/compositor/meta-background.c +++ /dev/null @@ -1,1018 +0,0 @@ -/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ - -/* - * Copyright 2013 Red Hat, Inc. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see <http://www.gnu.org/licenses/>. - */ - -#include "config.h" - -#include "compositor/meta-background-private.h" - -#include <string.h> - -#include "backends/meta-backend-private.h" -#include "compositor/cogl-utils.h" -#include "meta/display.h" -#include "meta/meta-background-image.h" -#include "meta/meta-background.h" -#include "meta/meta-monitor-manager.h" -#include "meta/util.h" - -enum -{ - CHANGED, - LAST_SIGNAL -}; - -static guint signals[LAST_SIGNAL] = { 0 }; - -typedef struct _MetaBackgroundMonitor MetaBackgroundMonitor; - -struct _MetaBackgroundMonitor -{ - gboolean dirty; - CoglTexture *texture; - CoglFramebuffer *fbo; -}; - -struct _MetaBackground -{ - GObject parent; - - MetaDisplay *display; - MetaBackgroundMonitor *monitors; - int n_monitors; - - GDesktopBackgroundStyle style; - GDesktopBackgroundShading shading_direction; - ClutterColor color; - ClutterColor second_color; - - GFile *file1; - MetaBackgroundImage *background_image1; - GFile *file2; - MetaBackgroundImage *background_image2; - - CoglTexture *color_texture; - CoglTexture *wallpaper_texture; - - float blend_factor; - - guint wallpaper_allocation_failed : 1; -}; - -enum -{ - PROP_META_DISPLAY = 1, - PROP_MONITOR, -}; - -G_DEFINE_TYPE (MetaBackground, meta_background, G_TYPE_OBJECT) - -static gboolean texture_has_alpha (CoglTexture *texture); - -static GSList *all_backgrounds = NULL; - -static void -free_fbos (MetaBackground *self) -{ - int i; - - for (i = 0; i < self->n_monitors; i++) - { - MetaBackgroundMonitor *monitor = &self->monitors[i]; - - g_clear_object (&monitor->fbo); - cogl_clear_object (&monitor->texture); - } -} - -static void -free_color_texture (MetaBackground *self) -{ - cogl_clear_object (&self->color_texture); -} - -static void -free_wallpaper_texture (MetaBackground *self) -{ - cogl_clear_object (&self->wallpaper_texture); - - self->wallpaper_allocation_failed = FALSE; -} - -static void -invalidate_monitor_backgrounds (MetaBackground *self) -{ - free_fbos (self); - g_clear_pointer (&self->monitors, g_free); - self->n_monitors = 0; - - if (self->display) - { - int i; - - self->n_monitors = meta_display_get_n_monitors (self->display); - self->monitors = g_new0 (MetaBackgroundMonitor, self->n_monitors); - - for (i = 0; i < self->n_monitors; i++) - self->monitors[i].dirty = TRUE; - } -} - -static void -on_monitors_changed (MetaBackground *self) -{ - invalidate_monitor_backgrounds (self); -} - -static void -set_display (MetaBackground *self, - MetaDisplay *display) -{ - g_set_object (&self->display, display); - - invalidate_monitor_backgrounds (self); -} - -static void -meta_background_set_property (GObject *object, - guint prop_id, - const GValue *value, - GParamSpec *pspec) -{ - switch (prop_id) - { - case PROP_META_DISPLAY: - set_display (META_BACKGROUND (object), g_value_get_object (value)); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -static void -meta_background_get_property (GObject *object, - guint prop_id, - GValue *value, - GParamSpec *pspec) -{ - MetaBackground *self = META_BACKGROUND (object); - - switch (prop_id) - { - case PROP_META_DISPLAY: - g_value_set_object (value, self->display); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -static gboolean -need_prerender (MetaBackground *self) -{ - CoglTexture *texture1 = self->background_image1 ? meta_background_image_get_texture (self->background_image1) : NULL; - CoglTexture *texture2 = self->background_image2 ? meta_background_image_get_texture (self->background_image2) : NULL; - - if (texture1 == NULL && texture2 == NULL) - return FALSE; - - if (texture2 == NULL && self->style == G_DESKTOP_BACKGROUND_STYLE_WALLPAPER) - return FALSE; - - return TRUE; -} - -static void -mark_changed (MetaBackground *self) -{ - int i; - - if (!need_prerender (self)) - free_fbos (self); - - for (i = 0; i < self->n_monitors; i++) - self->monitors[i].dirty = TRUE; - - g_signal_emit (self, signals[CHANGED], 0); -} - -static void -on_background_loaded (MetaBackgroundImage *image, - MetaBackground *self) -{ - mark_changed (self); -} - -static gboolean -file_equal0 (GFile *file1, - GFile *file2) -{ - if (file1 == file2) - return TRUE; - - if ((file1 == NULL) || (file2 == NULL)) - return FALSE; - - return g_file_equal (file1, file2); -} - -static void -set_file (MetaBackground *self, - GFile **filep, - MetaBackgroundImage **imagep, - GFile *file, - gboolean force_reload) -{ - if (force_reload || !file_equal0 (*filep, file)) - { - if (*imagep) - { - g_signal_handlers_disconnect_by_func (*imagep, - (gpointer)on_background_loaded, - self); - g_clear_object (imagep); - } - - g_set_object (filep, file); - - if (file) - { - MetaBackgroundImageCache *cache = meta_background_image_cache_get_default (); - - *imagep = meta_background_image_cache_load (cache, file); - g_signal_connect (*imagep, "loaded", - G_CALLBACK (on_background_loaded), self); - } - } -} - -static void -on_gl_video_memory_purged (MetaBackground *self) -{ - MetaBackgroundImageCache *cache = meta_background_image_cache_get_default (); - - /* The GPU memory that just got invalidated is the texture inside - * self->background_image1,2 and/or its mipmaps. However, to save memory the - * original pixbuf isn't kept in RAM so we can't do a simple re-upload. The - * only copy of the image was the one in texture memory that got invalidated. - * So we need to do a full reload from disk. - */ - if (self->file1) - { - meta_background_image_cache_purge (cache, self->file1); - set_file (self, &self->file1, &self->background_image1, self->file1, TRUE); - } - - if (self->file2) - { - meta_background_image_cache_purge (cache, self->file2); - set_file (self, &self->file2, &self->background_image2, self->file2, TRUE); - } - - mark_changed (self); -} - -static void -meta_background_dispose (GObject *object) -{ - MetaBackground *self = META_BACKGROUND (object); - - free_color_texture (self); - free_wallpaper_texture (self); - - set_file (self, &self->file1, &self->background_image1, NULL, FALSE); - set_file (self, &self->file2, &self->background_image2, NULL, FALSE); - - set_display (self, NULL); - - G_OBJECT_CLASS (meta_background_parent_class)->dispose (object); -} - -static void -meta_background_finalize (GObject *object) -{ - all_backgrounds = g_slist_remove (all_backgrounds, object); - - G_OBJECT_CLASS (meta_background_parent_class)->finalize (object); -} - -static void -meta_background_constructed (GObject *object) -{ - MetaBackground *self = META_BACKGROUND (object); - MetaMonitorManager *monitor_manager = meta_monitor_manager_get (); - - G_OBJECT_CLASS (meta_background_parent_class)->constructed (object); - - g_signal_connect_object (self->display, "gl-video-memory-purged", - G_CALLBACK (on_gl_video_memory_purged), object, G_CONNECT_SWAPPED); - - g_signal_connect_object (monitor_manager, "monitors-changed", - G_CALLBACK (on_monitors_changed), self, - G_CONNECT_SWAPPED); -} - -static void -meta_background_class_init (MetaBackgroundClass *klass) -{ - GObjectClass *object_class = G_OBJECT_CLASS (klass); - GParamSpec *param_spec; - - object_class->dispose = meta_background_dispose; - object_class->finalize = meta_background_finalize; - object_class->constructed = meta_background_constructed; - object_class->set_property = meta_background_set_property; - object_class->get_property = meta_background_get_property; - - signals[CHANGED] = - g_signal_new ("changed", - G_TYPE_FROM_CLASS (object_class), - G_SIGNAL_RUN_LAST, - 0, - NULL, NULL, NULL, - G_TYPE_NONE, 0); - - param_spec = g_param_spec_object ("meta-display", - "MetaDisplay", - "MetaDisplay", - META_TYPE_DISPLAY, - G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY); - - g_object_class_install_property (object_class, - PROP_META_DISPLAY, - param_spec); - -} - -static void -meta_background_init (MetaBackground *self) -{ - all_backgrounds = g_slist_prepend (all_backgrounds, self); -} - -static void -set_texture_area_from_monitor_area (cairo_rectangle_int_t *monitor_area, - cairo_rectangle_int_t *texture_area) -{ - texture_area->x = 0; - texture_area->y = 0; - texture_area->width = monitor_area->width; - texture_area->height = monitor_area->height; -} - -static void -get_texture_area (MetaBackground *self, - cairo_rectangle_int_t *monitor_rect, - float monitor_scale, - CoglTexture *texture, - cairo_rectangle_int_t *texture_area) -{ - cairo_rectangle_int_t image_area; - int screen_width, screen_height; - float texture_width, texture_height; - float monitor_x_scale, monitor_y_scale; - - texture_width = cogl_texture_get_width (texture); - texture_height = cogl_texture_get_height (texture); - - switch (self->style) - { - case G_DESKTOP_BACKGROUND_STYLE_STRETCHED: - default: - /* paint region is whole actor, and the texture - * is scaled disproportionately to fit the actor - */ - set_texture_area_from_monitor_area (monitor_rect, texture_area); - break; - case G_DESKTOP_BACKGROUND_STYLE_WALLPAPER: - meta_display_get_size (self->display, &screen_width, &screen_height); - - /* Start off by centering a tile in the middle of the - * total screen area taking care of the monitor scaling. - */ - image_area.x = (screen_width - texture_width) / 2.0; - image_area.y = (screen_height - texture_height) / 2.0; - image_area.width = texture_width; - image_area.height = texture_height; - - /* Translate into the coordinate system of the particular monitor */ - image_area.x -= monitor_rect->x; - image_area.y -= monitor_rect->y; - - *texture_area = image_area; - break; - case G_DESKTOP_BACKGROUND_STYLE_CENTERED: - /* paint region is the original image size centered in the actor, - * and the texture is scaled to the original image size */ - image_area.width = texture_width; - image_area.height = texture_height; - image_area.x = monitor_rect->width / 2 - image_area.width / 2; - image_area.y = monitor_rect->height / 2 - image_area.height / 2; - - *texture_area = image_area; - break; - case G_DESKTOP_BACKGROUND_STYLE_SCALED: - case G_DESKTOP_BACKGROUND_STYLE_ZOOM: - /* paint region is the actor size in one dimension, and centered and - * scaled by proportional amount in the other dimension. - * - * SCALED forces the centered dimension to fit on screen. - * ZOOM forces the centered dimension to grow off screen - */ - monitor_x_scale = monitor_rect->width / texture_width; - monitor_y_scale = monitor_rect->height / texture_height; - - if ((self->style == G_DESKTOP_BACKGROUND_STYLE_SCALED && - (monitor_x_scale < monitor_y_scale)) || - (self->style == G_DESKTOP_BACKGROUND_STYLE_ZOOM && - (monitor_x_scale > monitor_y_scale))) - { - /* Fill image to exactly fit actor horizontally */ - image_area.width = monitor_rect->width; - image_area.height = texture_height * monitor_x_scale; - - /* Position image centered vertically in actor */ - image_area.x = 0; - image_area.y = monitor_rect->height / 2 - image_area.height / 2; - } - else - { - /* Scale image to exactly fit actor vertically */ - image_area.width = texture_width * monitor_y_scale; - image_area.height = monitor_rect->height; - - /* Position image centered horizontally in actor */ - image_area.x = monitor_rect->width / 2 - image_area.width / 2; - image_area.y = 0; - } - - *texture_area = image_area; - break; - - case G_DESKTOP_BACKGROUND_STYLE_SPANNED: - { - /* paint region is the union of all monitors, with the origin - * of the region set to align with monitor associated with the background. - */ - meta_display_get_size (self->display, &screen_width, &screen_height); - - /* unclipped texture area is whole screen, scaled depending on monitor */ - image_area.width = screen_width * monitor_scale; - image_area.height = screen_height * monitor_scale; - - /* But make (0,0) line up with the appropriate monitor */ - image_area.x = -monitor_rect->x; - image_area.y = -monitor_rect->y; - - *texture_area = image_area; - break; - } - } -} - -static gboolean -draw_texture (MetaBackground *self, - CoglFramebuffer *framebuffer, - CoglPipeline *pipeline, - CoglTexture *texture, - cairo_rectangle_int_t *monitor_area, - float monitor_scale) -{ - cairo_rectangle_int_t texture_area; - gboolean bare_region_visible; - - get_texture_area (self, monitor_area, monitor_scale, texture, &texture_area); - - switch (self->style) - { - case G_DESKTOP_BACKGROUND_STYLE_STRETCHED: - case G_DESKTOP_BACKGROUND_STYLE_WALLPAPER: - case G_DESKTOP_BACKGROUND_STYLE_ZOOM: - case G_DESKTOP_BACKGROUND_STYLE_SPANNED: - /* Draw the entire monitor */ - cogl_framebuffer_draw_textured_rectangle (framebuffer, - pipeline, - 0, - 0, - monitor_area->width, - monitor_area->height, - - texture_area.x / (float)texture_area.width, - - texture_area.y / (float)texture_area.height, - (monitor_area->width - texture_area.x) / (float)texture_area.width, - (monitor_area->height - texture_area.y) / (float)texture_area.height); - - bare_region_visible = texture_has_alpha (texture); - - /* Draw just the texture */ - break; - case G_DESKTOP_BACKGROUND_STYLE_CENTERED: - case G_DESKTOP_BACKGROUND_STYLE_SCALED: - cogl_framebuffer_draw_textured_rectangle (framebuffer, - pipeline, - texture_area.x, texture_area.y, - texture_area.x + texture_area.width, - texture_area.y + texture_area.height, - 0, 0, 1.0, 1.0); - bare_region_visible = texture_has_alpha (texture) || memcmp (&texture_area, monitor_area, sizeof (cairo_rectangle_int_t)) != 0; - break; - case G_DESKTOP_BACKGROUND_STYLE_NONE: - bare_region_visible = TRUE; - break; - default: - g_return_val_if_reached(FALSE); - } - - return bare_region_visible; -} - -static void -ensure_color_texture (MetaBackground *self) -{ - if (self->color_texture == NULL) - { - ClutterBackend *backend = clutter_get_default_backend (); - CoglContext *ctx = clutter_backend_get_cogl_context (backend); - GError *error = NULL; - uint8_t pixels[6]; - int width, height; - - if (self->shading_direction == G_DESKTOP_BACKGROUND_SHADING_SOLID) - { - width = 1; - height = 1; - - pixels[0] = self->color.red; - pixels[1] = self->color.green; - pixels[2] = self->color.blue; - } - else - { - switch (self->shading_direction) - { - case G_DESKTOP_BACKGROUND_SHADING_VERTICAL: - width = 1; - height = 2; - break; - case G_DESKTOP_BACKGROUND_SHADING_HORIZONTAL: - width = 2; - height = 1; - break; - default: - g_return_if_reached (); - } - - pixels[0] = self->color.red; - pixels[1] = self->color.green; - pixels[2] = self->color.blue; - pixels[3] = self->second_color.red; - pixels[4] = self->second_color.green; - pixels[5] = self->second_color.blue; - } - - self->color_texture = COGL_TEXTURE (cogl_texture_2d_new_from_data (ctx, width, height, - COGL_PIXEL_FORMAT_RGB_888, - width * 3, - pixels, - &error)); - - if (error != NULL) - { - meta_warning ("Failed to allocate color texture: %s", error->message); - g_error_free (error); - } - } -} - -typedef enum -{ - PIPELINE_REPLACE, - PIPELINE_ADD, - PIPELINE_OVER_REVERSE, -} PipelineType; - -static CoglPipeline * -create_pipeline (PipelineType type) -{ - const char * const blend_strings[3] = { - [PIPELINE_REPLACE] = "RGBA = ADD (SRC_COLOR, 0)", - [PIPELINE_ADD] = "RGBA = ADD (SRC_COLOR, DST_COLOR)", - [PIPELINE_OVER_REVERSE] = "RGBA = ADD (SRC_COLOR * (1 - DST_COLOR[A]), DST_COLOR)", - }; - static CoglPipeline *templates[3]; - - if (templates[type] == NULL) - { - templates[type] = meta_create_texture_pipeline (NULL); - cogl_pipeline_set_blend (templates[type], blend_strings[type], NULL); - } - - cogl_pipeline_set_layer_filters (templates[type], - 0, - COGL_PIPELINE_FILTER_LINEAR_MIPMAP_LINEAR, - COGL_PIPELINE_FILTER_LINEAR); - - return cogl_pipeline_copy (templates[type]); -} - -static gboolean -texture_has_alpha (CoglTexture *texture) -{ - if (!texture) - return FALSE; - - switch (cogl_texture_get_components (texture)) - { - case COGL_TEXTURE_COMPONENTS_A: - case COGL_TEXTURE_COMPONENTS_RGBA: - return TRUE; - case COGL_TEXTURE_COMPONENTS_RG: - case COGL_TEXTURE_COMPONENTS_RGB: - case COGL_TEXTURE_COMPONENTS_DEPTH: - return FALSE; - default: - g_assert_not_reached (); - return FALSE; - } -} - -static gboolean -ensure_wallpaper_texture (MetaBackground *self, - CoglTexture *texture) -{ - if (self->wallpaper_texture == NULL && !self->wallpaper_allocation_failed) - { - int width = cogl_texture_get_width (texture); - int height = cogl_texture_get_height (texture); - CoglOffscreen *offscreen; - CoglFramebuffer *fbo; - GError *catch_error = NULL; - CoglPipeline *pipeline; - - self->wallpaper_texture = meta_create_texture (width, height, - COGL_TEXTURE_COMPONENTS_RGBA, - META_TEXTURE_FLAGS_NONE); - offscreen = cogl_offscreen_new_with_texture (self->wallpaper_texture); - fbo = COGL_FRAMEBUFFER (offscreen); - - if (!cogl_framebuffer_allocate (fbo, &catch_error)) - { - /* This probably means that the size of the wallpapered texture is larger - * than the maximum texture size; we treat it as permanent until the - * background is changed again. - */ - g_error_free (catch_error); - - cogl_clear_object (&self->wallpaper_texture); - g_object_unref (fbo); - - self->wallpaper_allocation_failed = TRUE; - return FALSE; - } - - cogl_framebuffer_orthographic (fbo, 0, 0, - width, height, -1., 1.); - - pipeline = create_pipeline (PIPELINE_REPLACE); - cogl_pipeline_set_layer_texture (pipeline, 0, texture); - cogl_framebuffer_draw_textured_rectangle (fbo, pipeline, 0, 0, width, height, - 0., 0., 1., 1.); - cogl_object_unref (pipeline); - - if (texture_has_alpha (texture)) - { - ensure_color_texture (self); - - pipeline = create_pipeline (PIPELINE_OVER_REVERSE); - cogl_pipeline_set_layer_texture (pipeline, 0, self->color_texture); - cogl_framebuffer_draw_rectangle (fbo, pipeline, 0, 0, width, height); - cogl_object_unref (pipeline); - } - - g_object_unref (fbo); - } - - return self->wallpaper_texture != NULL; -} - -static CoglPipelineWrapMode -get_wrap_mode (GDesktopBackgroundStyle style) -{ - switch (style) - { - case G_DESKTOP_BACKGROUND_STYLE_WALLPAPER: - return COGL_PIPELINE_WRAP_MODE_REPEAT; - case G_DESKTOP_BACKGROUND_STYLE_NONE: - case G_DESKTOP_BACKGROUND_STYLE_STRETCHED: - case G_DESKTOP_BACKGROUND_STYLE_CENTERED: - case G_DESKTOP_BACKGROUND_STYLE_SCALED: - case G_DESKTOP_BACKGROUND_STYLE_ZOOM: - case G_DESKTOP_BACKGROUND_STYLE_SPANNED: - default: - return COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE; - } -} - -static int -get_best_mipmap_level (CoglTexture *texture, - int visible_width, - int visible_height) -{ - int mipmap_width = cogl_texture_get_width (texture); - int mipmap_height = cogl_texture_get_height (texture); - int halves = 0; - - while (mipmap_width >= visible_width && mipmap_height >= visible_height) - { - halves++; - mipmap_width /= 2; - mipmap_height /= 2; - } - - return MAX (0, halves - 1); -} - -CoglTexture * -meta_background_get_texture (MetaBackground *self, - int monitor_index, - cairo_rectangle_int_t *texture_area, - CoglPipelineWrapMode *wrap_mode) -{ - MetaBackgroundMonitor *monitor; - MetaRectangle geometry; - cairo_rectangle_int_t monitor_area; - CoglTexture *texture1, *texture2; - float monitor_scale; - - g_return_val_if_fail (META_IS_BACKGROUND (self), NULL); - g_return_val_if_fail (monitor_index >= 0 && monitor_index < self->n_monitors, NULL); - - monitor = &self->monitors[monitor_index]; - - meta_display_get_monitor_geometry (self->display, monitor_index, &geometry); - monitor_scale = meta_display_get_monitor_scale (self->display, monitor_index); - monitor_area.x = geometry.x; - monitor_area.y = geometry.y; - monitor_area.width = geometry.width; - monitor_area.height = geometry.height; - - texture1 = self->background_image1 ? meta_background_image_get_texture (self->background_image1) : NULL; - texture2 = self->background_image2 ? meta_background_image_get_texture (self->background_image2) : NULL; - - if (texture1 == NULL && texture2 == NULL) - { - ensure_color_texture (self); - if (texture_area) - set_texture_area_from_monitor_area (&monitor_area, texture_area); - if (wrap_mode) - *wrap_mode = COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE; - return self->color_texture; - } - - if (texture2 == NULL && self->style == G_DESKTOP_BACKGROUND_STYLE_WALLPAPER && - self->shading_direction == G_DESKTOP_BACKGROUND_SHADING_SOLID && - ensure_wallpaper_texture (self, texture1)) - { - if (texture_area) - get_texture_area (self, &monitor_area, monitor_scale, - self->wallpaper_texture, texture_area); - if (wrap_mode) - *wrap_mode = COGL_PIPELINE_WRAP_MODE_REPEAT; - return self->wallpaper_texture; - } - - if (monitor->dirty) - { - GError *catch_error = NULL; - gboolean bare_region_visible = FALSE; - int texture_width, texture_height; - - if (meta_is_stage_views_scaled ()) - { - texture_width = monitor_area.width * monitor_scale; - texture_height = monitor_area.height * monitor_scale; - } - else - { - texture_width = monitor_area.width; - texture_height = monitor_area.height; - } - - if (monitor->texture == NULL) - { - CoglOffscreen *offscreen; - - monitor->texture = meta_create_texture (texture_width, - texture_height, - COGL_TEXTURE_COMPONENTS_RGB, - META_TEXTURE_FLAGS_NONE); - offscreen = cogl_offscreen_new_with_texture (monitor->texture); - monitor->fbo = COGL_FRAMEBUFFER (offscreen); - } - - if (self->style != G_DESKTOP_BACKGROUND_STYLE_WALLPAPER) - { - monitor_area.x *= monitor_scale; - monitor_area.y *= monitor_scale; - monitor_area.width *= monitor_scale; - monitor_area.height *= monitor_scale; - } - - if (!cogl_framebuffer_allocate (monitor->fbo, &catch_error)) - { - /* Texture or framebuffer allocation failed; it's unclear why this happened; - * we'll try again the next time this is called. (MetaBackgroundActor - * caches the result, so user might be left without a background.) - */ - cogl_clear_object (&monitor->texture); - g_clear_object (&monitor->fbo); - - g_error_free (catch_error); - return NULL; - } - - cogl_framebuffer_orthographic (monitor->fbo, 0, 0, - monitor_area.width, monitor_area.height, -1., 1.); - - if (texture2 != NULL && self->blend_factor != 0.0) - { - CoglPipeline *pipeline = create_pipeline (PIPELINE_REPLACE); - int mipmap_level; - - mipmap_level = get_best_mipmap_level (texture2, - texture_width, - texture_height); - - cogl_pipeline_set_color4f (pipeline, - self->blend_factor, self->blend_factor, self->blend_factor, self->blend_factor); - cogl_pipeline_set_layer_texture (pipeline, 0, texture2); - cogl_pipeline_set_layer_wrap_mode (pipeline, 0, get_wrap_mode (self->style)); - cogl_pipeline_set_layer_max_mipmap_level (pipeline, 0, mipmap_level); - - bare_region_visible = draw_texture (self, - monitor->fbo, pipeline, - texture2, &monitor_area, - monitor_scale); - - cogl_object_unref (pipeline); - } - else - { - cogl_framebuffer_clear4f (monitor->fbo, - COGL_BUFFER_BIT_COLOR, - 0.0, 0.0, 0.0, 0.0); - } - - if (texture1 != NULL && self->blend_factor != 1.0) - { - CoglPipeline *pipeline = create_pipeline (PIPELINE_ADD); - int mipmap_level; - - mipmap_level = get_best_mipmap_level (texture1, - texture_width, - texture_height); - - cogl_pipeline_set_color4f (pipeline, - (1 - self->blend_factor), - (1 - self->blend_factor), - (1 - self->blend_factor), - (1 - self->blend_factor)); - cogl_pipeline_set_layer_texture (pipeline, 0, texture1); - cogl_pipeline_set_layer_wrap_mode (pipeline, 0, get_wrap_mode (self->style)); - cogl_pipeline_set_layer_max_mipmap_level (pipeline, 0, mipmap_level); - - bare_region_visible = bare_region_visible || draw_texture (self, - monitor->fbo, pipeline, - texture1, &monitor_area, - monitor_scale); - - cogl_object_unref (pipeline); - } - - if (bare_region_visible) - { - CoglPipeline *pipeline = create_pipeline (PIPELINE_OVER_REVERSE); - - ensure_color_texture (self); - cogl_pipeline_set_layer_texture (pipeline, 0, self->color_texture); - cogl_framebuffer_draw_rectangle (monitor->fbo, - pipeline, - 0, 0, - monitor_area.width, monitor_area.height); - cogl_object_unref (pipeline); - } - - monitor->dirty = FALSE; - } - - if (texture_area) - set_texture_area_from_monitor_area (&geometry, texture_area); - - if (wrap_mode) - *wrap_mode = COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE; - return monitor->texture; -} - -MetaBackground * -meta_background_new (MetaDisplay *display) -{ - return g_object_new (META_TYPE_BACKGROUND, - "meta-display", display, - NULL); -} - -void -meta_background_set_color (MetaBackground *self, - ClutterColor *color) -{ - ClutterColor dummy = { 0 }; - - g_return_if_fail (META_IS_BACKGROUND (self)); - g_return_if_fail (color != NULL); - - meta_background_set_gradient (self, - G_DESKTOP_BACKGROUND_SHADING_SOLID, - color, &dummy); -} - -void -meta_background_set_gradient (MetaBackground *self, - GDesktopBackgroundShading shading_direction, - ClutterColor *color, - ClutterColor *second_color) -{ - g_return_if_fail (META_IS_BACKGROUND (self)); - g_return_if_fail (color != NULL); - g_return_if_fail (second_color != NULL); - - self->shading_direction = shading_direction; - self->color = *color; - self->second_color = *second_color; - - free_color_texture (self); - free_wallpaper_texture (self); - mark_changed (self); -} - -/** - * meta_background_set_file: - * @self: a #MetaBackground - * @file: (nullable): a #GFile representing the background file - * @style: the background style to apply - * - * Set the background to @file - */ -void -meta_background_set_file (MetaBackground *self, - GFile *file, - GDesktopBackgroundStyle style) -{ - g_return_if_fail (META_IS_BACKGROUND (self)); - - meta_background_set_blend (self, file, NULL, 0.0, style); -} - -void -meta_background_set_blend (MetaBackground *self, - GFile *file1, - GFile *file2, - double blend_factor, - GDesktopBackgroundStyle style) -{ - g_return_if_fail (META_IS_BACKGROUND (self)); - g_return_if_fail (blend_factor >= 0.0 && blend_factor <= 1.0); - - set_file (self, &self->file1, &self->background_image1, file1, FALSE); - set_file (self, &self->file2, &self->background_image2, file2, FALSE); - - self->blend_factor = blend_factor; - self->style = style; - - free_wallpaper_texture (self); - mark_changed (self); -} - -void -meta_background_refresh_all (void) -{ - GSList *l; - - for (l = all_backgrounds; l; l = l->next) - mark_changed (l->data); -} |