From a28730edee1896242012f80fd0e63e7966652e02 Mon Sep 17 00:00:00 2001 From: Drew DeVault Date: Mon, 2 Apr 2018 21:57:13 -0400 Subject: [PATCH] Move swaybg background rendering into common/ swaylock will use it too --- common/background-image.c | 100 ++++++++++++++++++++++++++++++++ common/meson.build | 20 +++---- include/background-image.h | 19 +++++++ swaybg/main.c | 113 ++----------------------------------- 4 files changed, 133 insertions(+), 119 deletions(-) create mode 100644 common/background-image.c create mode 100644 include/background-image.h diff --git a/common/background-image.c b/common/background-image.c new file mode 100644 index 00000000..2988c2e2 --- /dev/null +++ b/common/background-image.c @@ -0,0 +1,100 @@ +#include +#include +#include +#include "background-image.h" +#include "cairo.h" + +cairo_surface_t *load_background_image(const char *path) { + cairo_surface_t *image; +#ifdef HAVE_GDK_PIXBUF + GError *err = NULL; + GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(path, &err); + if (!pixbuf) { + wlr_log(L_ERROR, "Failed to load background image."); + return false; + } + image = gdk_cairo_image_surface_create_from_pixbuf(pixbuf); + g_object_unref(pixbuf); +#else + image = cairo_image_surface_create_from_png(path); +#endif //HAVE_GDK_PIXBUF + if (!image) { + wlr_log(L_ERROR, "Failed to read background image."); + return NULL; + } + if (cairo_surface_status(image) != CAIRO_STATUS_SUCCESS) { + wlr_log(L_ERROR, "Failed to read background image: %s." +#ifndef HAVE_GDK_PIXBUF + "\nSway was compiled without gdk_pixbuf support, so only" + "\nPNG images can be loaded. This is the likely cause." +#endif //HAVE_GDK_PIXBUF + , cairo_status_to_string(cairo_surface_status(image))); + return NULL; + } + return image; +} + +void render_background_image(cairo_t *cairo, cairo_surface_t *image, + enum background_mode mode, int buffer_width, int buffer_height, + int buffer_scale) { + double width = cairo_image_surface_get_width(image); + double height = cairo_image_surface_get_height(image); + + switch (mode) { + case BACKGROUND_MODE_STRETCH: + cairo_scale(cairo, + (double)buffer_width / width, + (double)buffer_height / height); + cairo_set_source_surface(cairo, image, 0, 0); + break; + case BACKGROUND_MODE_FILL: { + double window_ratio = (double)buffer_width / buffer_height; + double bg_ratio = width / height; + + if (window_ratio > bg_ratio) { + double scale = (double)buffer_width / width; + cairo_scale(cairo, scale, scale); + cairo_set_source_surface(cairo, image, + 0, (double)buffer_height / 2 / scale - height / 2); + } else { + double scale = (double)buffer_height / height; + cairo_scale(cairo, scale, scale); + cairo_set_source_surface(cairo, image, + (double)buffer_width / 2 / scale - width / 2, 0); + } + break; + } + case BACKGROUND_MODE_FIT: { + double window_ratio = (double)buffer_width / buffer_height; + double bg_ratio = width / height; + + if (window_ratio > bg_ratio) { + double scale = (double)buffer_height / height; + cairo_scale(cairo, scale, scale); + cairo_set_source_surface(cairo, image, + (double)buffer_width / 2 / scale - width / 2, 0); + } else { + double scale = (double)buffer_width / width; + cairo_scale(cairo, scale, scale); + cairo_set_source_surface(cairo, image, + 0, (double)buffer_height / 2 / scale - height / 2); + } + break; + } + case BACKGROUND_MODE_CENTER: + cairo_set_source_surface(cairo, image, + (double)buffer_width / 2 - width / 2, + (double)buffer_height / 2 - height / 2); + break; + case BACKGROUND_MODE_TILE: { + cairo_pattern_t *pattern = cairo_pattern_create_for_surface(image); + cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT); + cairo_set_source(cairo, pattern); + break; + } + case BACKGROUND_MODE_SOLID_COLOR: + assert(0); + break; + } + cairo_paint(cairo); +} diff --git a/common/meson.build b/common/meson.build index 4ad47077..851e7bbf 100644 --- a/common/meson.build +++ b/common/meson.build @@ -1,17 +1,7 @@ -deps = [ - cairo, - pango, - pangocairo, - wlroots -] - -if gdk_pixbuf.found() - deps += [gdk_pixbuf] -endif - lib_sway_common = static_library( 'sway-common', files( + 'background-image.c', 'cairo.c', 'ipc-client.c', 'log.c', @@ -21,6 +11,12 @@ lib_sway_common = static_library( 'stringop.c', 'util.c' ), - dependencies: deps, + dependencies: [ + cairo, + gdk_pixbuf, + pango, + pangocairo, + wlroots + ], include_directories: sway_inc ) diff --git a/include/background-image.h b/include/background-image.h new file mode 100644 index 00000000..e160e63d --- /dev/null +++ b/include/background-image.h @@ -0,0 +1,19 @@ +#ifndef _SWAY_BACKGROUND_IMAGE_H +#define _SWAY_BACKGROUND_IMAGE_H +#include "cairo.h" + +enum background_mode { + BACKGROUND_MODE_STRETCH, + BACKGROUND_MODE_FILL, + BACKGROUND_MODE_FIT, + BACKGROUND_MODE_CENTER, + BACKGROUND_MODE_TILE, + BACKGROUND_MODE_SOLID_COLOR, +}; + +cairo_surface_t *load_background_image(const char *path); +void render_background_image(cairo_t *cairo, cairo_surface_t *image, + enum background_mode mode, int buffer_width, int buffer_height, + int buffer_scale); + +#endif diff --git a/swaybg/main.c b/swaybg/main.c index c282a707..ffefcd08 100644 --- a/swaybg/main.c +++ b/swaybg/main.c @@ -7,20 +7,12 @@ #include #include #include +#include "background-image.h" #include "pool-buffer.h" #include "cairo.h" #include "util.h" #include "wlr-layer-shell-unstable-v1-client-protocol.h" -enum background_mode { - BACKGROUND_MODE_STRETCH, - BACKGROUND_MODE_FILL, - BACKGROUND_MODE_FIT, - BACKGROUND_MODE_CENTER, - BACKGROUND_MODE_TILE, - BACKGROUND_MODE_SOLID_COLOR, -}; - struct swaybg_args { int output_idx; const char *path; @@ -71,85 +63,16 @@ bool is_valid_color(const char *color) { return true; } -static void render_image(struct swaybg_state *state) { - cairo_t *cairo = state->current_buffer->cairo; - cairo_surface_t *image = state->context.image; - double width = cairo_image_surface_get_width(image); - double height = cairo_image_surface_get_height(image); - int buffer_width = state->width * state->scale; - int buffer_height = state->height * state->scale; - - switch (state->args->mode) { - case BACKGROUND_MODE_STRETCH: - cairo_scale(cairo, (double)buffer_width / width, - (double)buffer_height / height); - cairo_set_source_surface(cairo, image, 0, 0); - break; - case BACKGROUND_MODE_FILL: { - double window_ratio = (double)buffer_width / buffer_height; - double bg_ratio = width / height; - - if (window_ratio > bg_ratio) { - double scale = (double)buffer_width / width; - cairo_scale(cairo, scale, scale); - cairo_set_source_surface(cairo, image, - 0, (double)buffer_height / 2 / scale - height / 2); - } else { - double scale = (double)buffer_height / height; - cairo_scale(cairo, scale, scale); - cairo_set_source_surface(cairo, image, - (double)buffer_width / 2 / scale - width / 2, 0); - } - break; - } - case BACKGROUND_MODE_FIT: { - double window_ratio = (double)buffer_width / buffer_height; - double bg_ratio = width / height; - - if (window_ratio > bg_ratio) { - double scale = (double)buffer_height / height; - cairo_scale(cairo, scale, scale); - cairo_set_source_surface(cairo, image, - (double)buffer_width / 2 / scale - width / 2, 0); - } else { - double scale = (double)buffer_width / width; - cairo_scale(cairo, scale, scale); - cairo_set_source_surface(cairo, image, - 0, (double)buffer_height / 2 / scale - height / 2); - } - break; - } - case BACKGROUND_MODE_CENTER: - cairo_set_source_surface(cairo, image, - (double)buffer_width / 2 - width / 2, - (double)buffer_height / 2 - height / 2); - break; - case BACKGROUND_MODE_TILE: { - cairo_pattern_t *pattern = cairo_pattern_create_for_surface(image); - cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT); - cairo_set_source(cairo, pattern); - break; - } - case BACKGROUND_MODE_SOLID_COLOR: - assert(0); - break; - } - cairo_paint(cairo); -} - static void render_frame(struct swaybg_state *state) { state->current_buffer = get_next_buffer(state->shm, state->buffers, state->width * state->scale, state->height * state->scale); cairo_t *cairo = state->current_buffer->cairo; - - switch (state->args->mode) { - case BACKGROUND_MODE_SOLID_COLOR: + if (state->args->mode == BACKGROUND_MODE_SOLID_COLOR) { cairo_set_source_u32(cairo, state->context.color); cairo_paint(cairo); - break; - default: - render_image(state); - break; + } else { + render_background_image(cairo, state->context.image, + state->args->mode, state->width, state->height, state->scale); } wl_surface_set_buffer_scale(state->surface, state->scale); @@ -163,31 +86,7 @@ static bool prepare_context(struct swaybg_state *state) { state->context.color = parse_color(state->args->path); return is_valid_color(state->args->path); } -#ifdef HAVE_GDK_PIXBUF - GError *err = NULL; - GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(state->args->path, &err); - if (!pixbuf) { - wlr_log(L_ERROR, "Failed to load background image."); - return false; - } - state->context.image = gdk_cairo_image_surface_create_from_pixbuf(pixbuf); - g_object_unref(pixbuf); -#else - state->context.image = cairo_image_surface_create_from_png( - state->args->path); -#endif //HAVE_GDK_PIXBUF - if (!state->context.image) { - wlr_log(L_ERROR, "Failed to read background image."); - return false; - } - if (cairo_surface_status(state->context.image) != CAIRO_STATUS_SUCCESS) { - wlr_log(L_ERROR, "Failed to read background image: %s." -#ifndef HAVE_GDK_PIXBUF - "\nSway was compiled without gdk_pixbuf support, so only" - "\nPNG images can be loaded. This is the likely cause." -#endif //HAVE_GDK_PIXBUF - , cairo_status_to_string( - cairo_surface_status(state->context.image))); + if (!(state->context.image = load_background_image(state->args->path))) { return false; } return true;