Import of the watch repository from Pebble

applib-targets/sdl/sdl_graphics.c

@@ -0,0 +1,61 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "sdl_graphics.h"
+
+#include "applib/graphics/graphics.h"
+#include "applib/graphics/8_bit/framebuffer.h"
+#include "util/circular_cache.h"
+
+#include <stdint.h>
+#include <stdio.h>
+#include <SDL.h>
+
+static GContext s_gcontext = {};
+static FrameBuffer fb = {};
+static SDL_Surface *screen = NULL;
+
+bool sdl_graphics_init(void) {
+  if (!(screen = SDL_SetVideoMode(DISP_COLS, DISP_ROWS, 8 /* bits/pixel */, SDL_HWSURFACE))) {
+    return false;
+  }
+
+  framebuffer_init(&fb, &(GSize) {DISP_COLS, DISP_ROWS});
+  s_gcontext = (GContext) {
+    .dest_bitmap = (GBitmap) {
+      .addr = screen->pixels,
+      .row_size_bytes = DISP_COLS,
+      .info = (BitmapInfo) {.format = GBITMAP_NATIVE_FORMAT },
+      .bounds = (GRect) { { 0, 0 }, { DISP_COLS, DISP_ROWS } },
+      .data_row_infos = NULL,
+    },
+    .parent_framebuffer = &fb,
+    .parent_framebuffer_vertical_offset = 0,
+    .lock = false
+  };
+
+  graphics_context_set_default_drawing_state(&s_gcontext, GContextInitializationMode_App);
+
+  return true;
+}
+
+GContext *sdl_graphics_get_gcontext(void) {
+  return &s_gcontext;
+}
+
+void sdl_graphics_render(void) {
+  SDL_Flip(screen);
+}