add SDL support

git-svn-id: http://skia.googlecode.com/svn/trunk@182 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 175 insertions, 0 deletions

diff --git a/src/utils/SDL/SkOSWindow_SDL.cpp b/src/utils/SDL/SkOSWindow_SDL.cpp
new file mode 100644
index 0000000000..13bea72afa
--- /dev/null
+++ b/src/utils/SDL/SkOSWindow_SDL.cpp
@@ -0,0 +1,175 @@
+#include "SkOSWindow_SDL.h"
+#include "SkCanvas.h"
+#include "SkOSMenu.h"
+#include "SkTime.h"
+
+static void post_SkEvent_event() {
+    SDL_Event evt;
+    evt.type = SDL_USEREVENT;
+    evt.user.type = SDL_USEREVENT;
+    evt.user.code = 0;
+    evt.user.data1 = NULL;
+    evt.user.data2 = NULL;
+    SDL_PushEvent(&evt);
+}
+
+static bool skia_setBitmapFromSurface(SkBitmap* dst, SDL_Surface* src) {
+    SkBitmap::Config config;
+    
+    switch (src->format->BytesPerPixel) {
+        case 2:
+            config = SkBitmap::kRGB_565_Config;
+            break;
+        case 4:
+            config = SkBitmap::kARGB_8888_Config;
+            break;
+        default:
+            return false;
+    }
+    
+    dst->setConfig(config, src->w, src->h, src->pitch);
+    dst->setPixels(src->pixels);
+    return true;
+}
+
+SkOSWindow::SkOSWindow(void* surface) {
+    fSurface = reinterpret_cast<SDL_Surface*>(surface);
+    this->resize(fSurface->w, fSurface->h);
+}
+
+void SkOSWindow::doDraw() {
+    if ( SDL_MUSTLOCK(fSurface) ) {
+        if ( SDL_LockSurface(fSurface) < 0 ) {
+            return;
+        }
+    }
+
+    SkBitmap bitmap;
+
+    if (skia_setBitmapFromSurface(&bitmap, fSurface)) {
+        SkCanvas canvas(bitmap);
+        this->draw(&canvas);
+    }
+
+    if ( SDL_MUSTLOCK(fSurface) ) {
+        SDL_UnlockSurface(fSurface);
+    }
+    SDL_UpdateRect(fSurface, 0, 0, fSurface->w, fSurface->h);
+}
+
+static SkKey find_skkey(SDLKey src) {
+    // this array must match the enum order in SkKey.h
+    static const SDLKey gKeys[] = {
+        SDLK_UNKNOWN,
+        SDLK_UNKNOWN,   // left softkey
+        SDLK_UNKNOWN,   // right softkey
+        SDLK_UNKNOWN,   // home
+        SDLK_UNKNOWN,   // back
+        SDLK_UNKNOWN,   // send
+        SDLK_UNKNOWN,   // end
+        SDLK_0,
+        SDLK_1,
+        SDLK_2,
+        SDLK_3,
+        SDLK_4,
+        SDLK_5,
+        SDLK_6,
+        SDLK_7,
+        SDLK_8,
+        SDLK_9,
+        SDLK_ASTERISK,
+        SDLK_HASH,
+        SDLK_UP,
+        SDLK_DOWN,
+        SDLK_LEFT,
+        SDLK_RIGHT,
+        SDLK_RETURN,    // OK
+        SDLK_UNKNOWN,   // volume up
+        SDLK_UNKNOWN,   // volume down
+        SDLK_UNKNOWN,   // power
+        SDLK_UNKNOWN,   // camera
+    };
+    
+    const SDLKey* array = gKeys;
+    for (size_t i = 0; i < SK_ARRAY_COUNT(gKeys); i++) {
+        if (array[i] == src) {
+            return static_cast<SkKey>(i);
+        }
+    }
+    return kNONE_SkKey;
+}
+
+void SkOSWindow::handleSDLEvent(const SDL_Event& event) {
+    switch (event.type) {
+        case SDL_VIDEORESIZE:
+            this->resize(event.resize.w, event.resize.h);
+            break;
+        case SDL_VIDEOEXPOSE:
+            this->doDraw();
+            break;
+        case SDL_MOUSEMOTION:
+            if (event.motion.state == SDL_PRESSED) {
+                this->handleClick(event.motion.x, event.motion.y,
+                                   SkView::Click::kMoved_State);
+            }
+            break;
+        case SDL_MOUSEBUTTONDOWN:
+        case SDL_MOUSEBUTTONUP:
+            this->handleClick(event.button.x, event.button.y,
+                               event.button.state == SDL_PRESSED ?
+                               SkView::Click::kDown_State :
+                               SkView::Click::kUp_State);
+            break;
+        case SDL_KEYDOWN: {
+            SkKey sk = find_skkey(event.key.keysym.sym);
+            if (kNONE_SkKey != sk) {
+                if (event.key.state == SDL_PRESSED) {
+                    this->handleKey(sk);
+                } else {
+                    this->handleKeyUp(sk);
+                }
+            }
+            break;
+        }
+        case SDL_USEREVENT:
+            if (SkEvent::ProcessEvent()) {
+                post_SkEvent_event();
+            }
+            break;
+    }
+}
+
+void SkOSWindow::onHandleInval(const SkIRect& r) {
+    SDL_Event evt;
+    evt.type = SDL_VIDEOEXPOSE;
+    evt.expose.type = SDL_VIDEOEXPOSE;
+    SDL_PushEvent(&evt);
+}
+
+void SkOSWindow::onSetTitle(const char title[]) {
+    SDL_WM_SetCaption(title, NULL);
+}
+
+void SkOSWindow::onAddMenu(const SkOSMenu* sk_menu) {}
+
+///////////////////////////////////////////////////////////////////////////////////////
+
+void SkEvent::SignalNonEmptyQueue() {
+    SkDebugf("-------- signal nonempty\n");
+    post_SkEvent_event();
+}
+
+static Uint32 timer_callback(Uint32 interval) {
+//    SkDebugf("-------- timercallback %d\n", interval);
+	SkEvent::ServiceQueueTimer();
+    return 0;
+}
+
+void SkEvent::SignalQueueTimer(SkMSec delay)
+{
+    SDL_SetTimer(0, NULL);
+    if (delay) {
+        SDL_SetTimer(delay, timer_callback);
+    }
+}
+