diff --git a/egl-compositor.c b/egl-compositor.c index 24f47337..8c2cfdde 100644 --- a/egl-compositor.c +++ b/egl-compositor.c @@ -13,6 +13,7 @@ #include #include #include +#include #include "wayland.h" #include "cairo-util.h" @@ -33,6 +34,7 @@ struct egl_compositor { int width, height; struct egl_surface *pointer; struct egl_surface *background; + struct egl_surface *overlay; }; struct egl_surface { @@ -177,6 +179,48 @@ screenshot(struct egl_compositor *ec) free(data); } +static struct egl_surface * +egl_surface_create_from_cairo_surface(cairo_surface_t *surface, + int x, int y, int width, int height) +{ + struct egl_surface *es; + int stride; + void *data; + + stride = cairo_image_surface_get_stride(surface); + data = cairo_image_surface_get_data(surface); + + es = malloc(sizeof *es); + if (es == NULL) + return NULL; + + glGenTextures(1, &es->texture); + glBindTexture(GL_TEXTURE_2D, es->texture); + glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_REPEAT); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, + GL_BGRA, GL_UNSIGNED_BYTE, data); + + es->map.x = x; + es->map.y = y; + es->map.width = width; + es->map.height = height; + es->surface = EGL_NO_SURFACE; + + return es; +} + +static void +egl_surface_destroy(struct egl_surface *es, struct egl_compositor *ec) +{ + glDeleteTextures(1, &es->texture); + if (es->surface != EGL_NO_SURFACE) + eglDestroySurface(ec->display, es->surface); + free(es); +} + static void pointer_path(cairo_t *cr, int x, int y) { @@ -196,16 +240,10 @@ pointer_path(cairo_t *cr, int x, int y) static struct egl_surface * pointer_create(int x, int y, int width, int height) { + struct egl_surface *es; const int hotspot_x = 16, hotspot_y = 16; - struct egl_surface *pointer; cairo_surface_t *surface; cairo_t *cr; - int stride; - void *data; - - pointer = malloc(sizeof *pointer); - if (pointer == NULL) - return NULL; surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height); @@ -224,36 +262,11 @@ pointer_create(int x, int y, int width, int height) cairo_fill(cr); cairo_destroy(cr); - stride = cairo_image_surface_get_stride(surface); - data = cairo_image_surface_get_data(surface); - - glGenTextures(1, &pointer->texture); - glBindTexture(GL_TEXTURE_2D, pointer->texture); - glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_REPEAT); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, - GL_BGRA, GL_UNSIGNED_BYTE, data); - + es = egl_surface_create_from_cairo_surface(surface, x, y, width, height); + cairo_surface_destroy(surface); - pointer->map.x = x; - pointer->map.y = y; - pointer->map.width = width; - pointer->map.height = height; - pointer->surface = EGL_NO_SURFACE; - - return pointer; -} - -static void -egl_surface_destroy(struct egl_surface *es, struct egl_compositor *ec) -{ - glDeleteTextures(1, &es->texture); - if (es->surface != EGL_NO_SURFACE) - eglDestroySurface(ec->display, es->surface); - free(es); + return es; } static struct egl_surface * @@ -299,6 +312,101 @@ background_create(const char *filename, int width, int height) return background; } +static void +rounded_rect(cairo_t *cr, int x0, int y0, int x1, int y1, int radius) +{ + cairo_move_to(cr, x0, y0 + radius); + cairo_arc(cr, x0 + radius, y0 + radius, radius, M_PI, 3 * M_PI / 2); + cairo_line_to(cr, x1 - radius, y0); + cairo_arc(cr, x1 - radius, y0 + radius, radius, 3 * M_PI / 2, 2 * M_PI); + cairo_line_to(cr, x1, y1 - radius); + cairo_arc(cr, x1 - radius, y1 - radius, radius, 0, M_PI / 2); + cairo_line_to(cr, x0 + radius, y1); + cairo_arc(cr, x0 + radius, y1 - radius, radius, M_PI / 2, M_PI); + cairo_close_path(cr); +} + +static void +draw_button(cairo_t *cr, int x, int y, int width, int height, const char *text) +{ + cairo_pattern_t *gradient; + cairo_text_extents_t extents; + double bright = 0.15, dim = 0.02; + int radius = 10; + + cairo_set_operator(cr, CAIRO_OPERATOR_OVER); + cairo_set_line_width (cr, 2); + rounded_rect(cr, x, y, x + width, y + height, radius); + cairo_set_source_rgb(cr, dim, dim, dim); + cairo_stroke(cr); + rounded_rect(cr, x + 2, y + 2, x + width, y + height, radius); + cairo_set_source_rgb(cr, 0.1, 0.1, 0.1); + cairo_stroke(cr); + + rounded_rect(cr, x + 1, y + 1, x + width - 1, y + height - 1, radius - 1); + cairo_set_source_rgb(cr, bright, bright, bright); + cairo_stroke(cr); + rounded_rect(cr, x + 3, y + 3, x + width - 1, y + height - 1, radius - 1); + cairo_set_source_rgb(cr, dim, dim, dim); + cairo_stroke(cr); + + rounded_rect(cr, x + 1, y + 1, x + width - 1, y + height - 1, radius - 1); + gradient = cairo_pattern_create_linear (0, y, 0, y + height); + cairo_pattern_add_color_stop_rgb(gradient, 0, 0.15, 0.15, 0.15); + cairo_pattern_add_color_stop_rgb(gradient, 0.5, 0.08, 0.08, 0.08); + cairo_pattern_add_color_stop_rgb(gradient, 0.5, 0.07, 0.07, 0.07); + cairo_pattern_add_color_stop_rgb(gradient, 1, 0.1, 0.1, 0.1); + cairo_set_source(cr, gradient); + cairo_fill(cr); + + cairo_set_font_size(cr, 16); + cairo_text_extents(cr, text, &extents); + cairo_move_to(cr, x + (width - extents.width) / 2, y + (height - extents.height) / 2 - extents.y_bearing); + cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND); + cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND); + cairo_set_line_width (cr, 4); + cairo_text_path(cr, text); + cairo_set_source_rgb(cr, 0.0, 0.0, 0.0); + cairo_stroke_preserve(cr); + cairo_set_source_rgb(cr, 1, 1, 1); + cairo_fill(cr); +} + +static struct egl_surface * +overlay_create(int x, int y, int width, int height) +{ + struct egl_surface *es; + cairo_surface_t *surface; + cairo_t *cr; + int total_width, button_x, button_y; + const int button_width = 150; + const int button_height = 40; + const int spacing = 50; + + surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, + width, height); + + cr = cairo_create(surface); + cairo_set_source_rgba(cr, 0.1, 0.1, 0.1, 0.7); + cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); + cairo_paint(cr); + + total_width = button_width * 2 + spacing; + button_x = (width - total_width) / 2; + button_y = height - button_height - 20; + draw_button(cr, button_x, button_y, button_width, button_height, "Previous"); + button_x += button_width + spacing; + draw_button(cr, button_x, button_y, button_width, button_height, "Next"); + + cairo_destroy(cr); + + es = egl_surface_create_from_cairo_surface(surface, x, y, width, height); + + cairo_surface_destroy(surface); + + return es; +} + static void draw_surface(struct egl_surface *es) { @@ -356,6 +464,8 @@ repaint(void *data) } wl_surface_iterator_destroy(iterator); + draw_surface(ec->overlay); + draw_surface(ec->pointer); eglSwapBuffers(ec->display, ec->surface); @@ -585,6 +695,7 @@ wl_compositor_create(struct wl_display *display) filename = "background.jpg"; ec->background = background_create(filename, 1280, 800); ec->pointer = pointer_create(100, 100, 64, 64); + ec->overlay = overlay_create(0, ec->height - 200, ec->width, 200); ec->gem_fd = open(gem_device, O_RDWR); if (ec->gem_fd < 0) {