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rootston: Add alpha channel to views

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This commit is contained in:
Guido Günther 2018-02-23 11:30:55 +01:00
parent d08792bfff
commit e2ea1ebe48
3 changed files with 10 additions and 1 deletions
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3
include/rootston/view.h
View file

@ -83,6 +83,7 @@ struct roots_view {
double x, y; double x, y;
uint32_t width, height; uint32_t width, height;
float rotation; float rotation;
float alpha;
bool decorated; bool decorated;
int border_width; int border_width;
@ -94,6 +95,7 @@ struct roots_view {
double x, y; double x, y;
uint32_t width, height; uint32_t width, height;
float rotation; float rotation;
float alpha;
} saved; } saved;
struct { struct {
@ -191,6 +193,7 @@ void view_maximize(struct roots_view *view, bool maximized);
void view_set_fullscreen(struct roots_view *view, bool fullscreen, void view_set_fullscreen(struct roots_view *view, bool fullscreen,
struct wlr_output *output); struct wlr_output *output);
void view_rotate(struct roots_view *view, float rotation); void view_rotate(struct roots_view *view, float rotation);
void view_cycle_alpha(struct roots_view *view);
void view_close(struct roots_view *view); void view_close(struct roots_view *view);
bool view_center(struct roots_view *view); bool view_center(struct roots_view *view);
void view_setup(struct roots_view *view); void view_setup(struct roots_view *view);

4
rootston/desktop.c
View file

@ -25,6 +25,10 @@
struct roots_view *view_create() { struct roots_view *view_create() {
struct roots_view *view = calloc(1, sizeof(struct roots_view)); struct roots_view *view = calloc(1, sizeof(struct roots_view));
if (!view) {
return NULL;
}
view->alpha = 1.0f;
return view; return view;
} }

4
rootston/output.c
View file

@ -202,6 +202,7 @@ struct render_data {
struct roots_output *output; struct roots_output *output;
struct timespec *when; struct timespec *when;
pixman_region32_t *damage; pixman_region32_t *damage;
float alpha;
}; };
/** /**
@ -296,7 +297,7 @@ static void render_surface(struct wlr_surface *surface, double lx, double ly,
pixman_box32_t *rects = pixman_region32_rectangles(&damage, &nrects); pixman_box32_t *rects = pixman_region32_rectangles(&damage, &nrects);
for (int i = 0; i < nrects; ++i) { for (int i = 0; i < nrects; ++i) {
scissor_output(output, &rects[i]); scissor_output(output, &rects[i]);
wlr_render_with_matrix(renderer, surface->texture, &matrix, 1.0f); wlr_render_with_matrix(renderer, surface->texture, &matrix, data->alpha);
} }
damage_finish: damage_finish:
@ -376,6 +377,7 @@ static void render_view(struct roots_view *view, struct render_data *data) {
return; return;
} }
data->alpha = view->alpha;
render_decorations(view, data); render_decorations(view, data);
view_for_each_surface(view, render_surface, data); view_for_each_surface(view, render_surface, data);
} }