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https://gitlab.freedesktop.org/wayland/wayland.git
synced 2025-11-02 09:01:39 -05:00
Add an overlay type window in the compositor.
This commit is contained in:
Kristian Høgsberg
parent
aa5b5bed73
commit
548798266e
1 changed files with 146 additions and 35 deletions
181
egl-compositor.c
181
egl-compositor.c
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@ -13,6 +13,7 @@
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <glib.h>
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#include <png.h>
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#include <math.h>
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#include "wayland.h"
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#include "cairo-util.h"
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@ -33,6 +34,7 @@ struct egl_compositor {
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int width, height;
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struct egl_surface *pointer;
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struct egl_surface *background;
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struct egl_surface *overlay;
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};
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struct egl_surface {
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@ -177,6 +179,48 @@ screenshot(struct egl_compositor *ec)
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free(data);
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}
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static struct egl_surface *
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egl_surface_create_from_cairo_surface(cairo_surface_t *surface,
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int x, int y, int width, int height)
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{
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struct egl_surface *es;
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int stride;
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void *data;
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stride = cairo_image_surface_get_stride(surface);
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data = cairo_image_surface_get_data(surface);
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es = malloc(sizeof *es);
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if (es == NULL)
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return NULL;
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glGenTextures(1, &es->texture);
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glBindTexture(GL_TEXTURE_2D, es->texture);
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glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_REPEAT);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0,
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GL_BGRA, GL_UNSIGNED_BYTE, data);
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es->map.x = x;
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es->map.y = y;
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es->map.width = width;
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es->map.height = height;
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es->surface = EGL_NO_SURFACE;
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return es;
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}
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static void
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egl_surface_destroy(struct egl_surface *es, struct egl_compositor *ec)
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{
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glDeleteTextures(1, &es->texture);
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if (es->surface != EGL_NO_SURFACE)
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eglDestroySurface(ec->display, es->surface);
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free(es);
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}
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static void
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pointer_path(cairo_t *cr, int x, int y)
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{
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@ -196,16 +240,10 @@ pointer_path(cairo_t *cr, int x, int y)
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static struct egl_surface *
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pointer_create(int x, int y, int width, int height)
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{
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struct egl_surface *es;
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const int hotspot_x = 16, hotspot_y = 16;
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struct egl_surface *pointer;
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cairo_surface_t *surface;
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cairo_t *cr;
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int stride;
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void *data;
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pointer = malloc(sizeof *pointer);
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if (pointer == NULL)
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return NULL;
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surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
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width, height);
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@ -224,36 +262,11 @@ pointer_create(int x, int y, int width, int height)
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cairo_fill(cr);
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cairo_destroy(cr);
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stride = cairo_image_surface_get_stride(surface);
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data = cairo_image_surface_get_data(surface);
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glGenTextures(1, &pointer->texture);
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glBindTexture(GL_TEXTURE_2D, pointer->texture);
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glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_REPEAT);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0,
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GL_BGRA, GL_UNSIGNED_BYTE, data);
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es = egl_surface_create_from_cairo_surface(surface, x, y, width, height);
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cairo_surface_destroy(surface);
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pointer->map.x = x;
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pointer->map.y = y;
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pointer->map.width = width;
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pointer->map.height = height;
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pointer->surface = EGL_NO_SURFACE;
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return pointer;
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}
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static void
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egl_surface_destroy(struct egl_surface *es, struct egl_compositor *ec)
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{
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glDeleteTextures(1, &es->texture);
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if (es->surface != EGL_NO_SURFACE)
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eglDestroySurface(ec->display, es->surface);
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free(es);
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return es;
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}
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static struct egl_surface *
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@ -299,6 +312,101 @@ background_create(const char *filename, int width, int height)
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return background;
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}
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static void
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rounded_rect(cairo_t *cr, int x0, int y0, int x1, int y1, int radius)
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{
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cairo_move_to(cr, x0, y0 + radius);
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cairo_arc(cr, x0 + radius, y0 + radius, radius, M_PI, 3 * M_PI / 2);
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cairo_line_to(cr, x1 - radius, y0);
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cairo_arc(cr, x1 - radius, y0 + radius, radius, 3 * M_PI / 2, 2 * M_PI);
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cairo_line_to(cr, x1, y1 - radius);
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cairo_arc(cr, x1 - radius, y1 - radius, radius, 0, M_PI / 2);
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cairo_line_to(cr, x0 + radius, y1);
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cairo_arc(cr, x0 + radius, y1 - radius, radius, M_PI / 2, M_PI);
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cairo_close_path(cr);
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}
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static void
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draw_button(cairo_t *cr, int x, int y, int width, int height, const char *text)
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{
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cairo_pattern_t *gradient;
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cairo_text_extents_t extents;
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double bright = 0.15, dim = 0.02;
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int radius = 10;
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cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
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cairo_set_line_width (cr, 2);
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rounded_rect(cr, x, y, x + width, y + height, radius);
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cairo_set_source_rgb(cr, dim, dim, dim);
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cairo_stroke(cr);
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rounded_rect(cr, x + 2, y + 2, x + width, y + height, radius);
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cairo_set_source_rgb(cr, 0.1, 0.1, 0.1);
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cairo_stroke(cr);
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rounded_rect(cr, x + 1, y + 1, x + width - 1, y + height - 1, radius - 1);
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cairo_set_source_rgb(cr, bright, bright, bright);
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cairo_stroke(cr);
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rounded_rect(cr, x + 3, y + 3, x + width - 1, y + height - 1, radius - 1);
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cairo_set_source_rgb(cr, dim, dim, dim);
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cairo_stroke(cr);
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rounded_rect(cr, x + 1, y + 1, x + width - 1, y + height - 1, radius - 1);
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gradient = cairo_pattern_create_linear (0, y, 0, y + height);
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cairo_pattern_add_color_stop_rgb(gradient, 0, 0.15, 0.15, 0.15);
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cairo_pattern_add_color_stop_rgb(gradient, 0.5, 0.08, 0.08, 0.08);
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cairo_pattern_add_color_stop_rgb(gradient, 0.5, 0.07, 0.07, 0.07);
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cairo_pattern_add_color_stop_rgb(gradient, 1, 0.1, 0.1, 0.1);
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cairo_set_source(cr, gradient);
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cairo_fill(cr);
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cairo_set_font_size(cr, 16);
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cairo_text_extents(cr, text, &extents);
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cairo_move_to(cr, x + (width - extents.width) / 2, y + (height - extents.height) / 2 - extents.y_bearing);
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cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
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cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
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cairo_set_line_width (cr, 4);
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cairo_text_path(cr, text);
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cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
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cairo_stroke_preserve(cr);
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cairo_set_source_rgb(cr, 1, 1, 1);
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cairo_fill(cr);
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}
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static struct egl_surface *
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overlay_create(int x, int y, int width, int height)
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{
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struct egl_surface *es;
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cairo_surface_t *surface;
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cairo_t *cr;
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int total_width, button_x, button_y;
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const int button_width = 150;
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const int button_height = 40;
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const int spacing = 50;
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surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
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width, height);
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cr = cairo_create(surface);
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cairo_set_source_rgba(cr, 0.1, 0.1, 0.1, 0.7);
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cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
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cairo_paint(cr);
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total_width = button_width * 2 + spacing;
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button_x = (width - total_width) / 2;
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button_y = height - button_height - 20;
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draw_button(cr, button_x, button_y, button_width, button_height, "Previous");
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button_x += button_width + spacing;
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draw_button(cr, button_x, button_y, button_width, button_height, "Next");
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cairo_destroy(cr);
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es = egl_surface_create_from_cairo_surface(surface, x, y, width, height);
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cairo_surface_destroy(surface);
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return es;
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}
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static void
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draw_surface(struct egl_surface *es)
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{
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@ -356,6 +464,8 @@ repaint(void *data)
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}
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wl_surface_iterator_destroy(iterator);
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draw_surface(ec->overlay);
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draw_surface(ec->pointer);
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eglSwapBuffers(ec->display, ec->surface);
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@ -585,6 +695,7 @@ wl_compositor_create(struct wl_display *display)
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filename = "background.jpg";
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ec->background = background_create(filename, 1280, 800);
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ec->pointer = pointer_create(100, 100, 64, 64);
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ec->overlay = overlay_create(0, ec->height - 200, ec->width, 200);
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ec->gem_fd = open(gem_device, O_RDWR);
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if (ec->gem_fd < 0) {
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