0ae6b245f2
add 'f' to sampleapp, which writes a png file for the currnet screen git-svn-id: http://skia.googlecode.com/svn/trunk@47 2bbb7eff-a529-9590-31e7-b0007b416f81
608 lines
16 KiB
C++
608 lines
16 KiB
C++
#include "SkCanvas.h"
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#include "SkDevice.h"
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#include "SkGLCanvas.h"
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#include "SkGraphics.h"
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#include "SkImageDecoder.h"
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#include "SkPaint.h"
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#include "SkPicture.h"
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#include "SkStream.h"
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#include "SkWindow.h"
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#include "SampleCode.h"
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//#define SK_SUPPORT_GL
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#ifdef SK_SUPPORT_GL
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#include <AGL/agl.h>
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#include <OpenGL/gl.h>
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#endif
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#define ANIMATING_EVENTTYPE "nextSample"
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#define ANIMATING_DELAY 750
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#define USE_OFFSCREEN
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SkViewRegister* SkViewRegister::gHead;
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SkViewRegister::SkViewRegister(SkViewFactory fact) : fFact(fact) {
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static bool gOnce;
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if (!gOnce) {
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gHead = NULL;
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gOnce = true;
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}
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fChain = gHead;
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gHead = this;
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}
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#ifdef SK_SUPPORT_GL
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static AGLContext gAGLContext;
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static void init_gl(WindowRef wref) {
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GLint major, minor;
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aglGetVersion(&major, &minor);
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SkDebugf("---- agl version %d %d\n", major, minor);
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const GLint pixelAttrs[] = {
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AGL_RGBA,
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AGL_DEPTH_SIZE, 32,
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AGL_OFFSCREEN,
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AGL_NONE
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};
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AGLPixelFormat format = aglCreatePixelFormat(pixelAttrs);
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SkDebugf("----- agl format %p\n", format);
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gAGLContext = aglCreateContext(format, NULL);
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SkDebugf("----- agl context %p\n", gAGLContext);
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aglDestroyPixelFormat(format);
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aglEnable(gAGLContext, GL_BLEND);
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aglEnable(gAGLContext, GL_LINE_SMOOTH);
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aglEnable(gAGLContext, GL_POINT_SMOOTH);
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aglEnable(gAGLContext, GL_POLYGON_SMOOTH);
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aglSetCurrentContext(gAGLContext);
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}
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static void setup_offscreen_gl(const SkBitmap& offscreen, WindowRef wref) {
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GLboolean success = true;
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#ifdef USE_OFFSCREEN
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success = aglSetOffScreen(gAGLContext,
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offscreen.width(),
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offscreen.height(),
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offscreen.rowBytes(),
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offscreen.getPixels());
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#else
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success = aglSetWindowRef(gAGLContext, wref);
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#endif
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GLenum err = aglGetError();
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if (err) {
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SkDebugf("---- setoffscreen %d %d %s [%d %d]\n", success, err,
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aglErrorString(err), offscreen.width(), offscreen.height());
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}
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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glHint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
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glEnable(GL_TEXTURE_2D);
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glClearColor(0, 0, 0, 0);
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glClear(GL_COLOR_BUFFER_BIT);
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}
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#endif
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//////////////////////////////////////////////////////////////////////////////
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static const char gTitleEvtName[] = "SampleCode_Title_Event";
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static const char gPrefSizeEvtName[] = "SampleCode_PrefSize_Event";
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bool SampleCode::TitleQ(const SkEvent& evt) {
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return evt.isType(gTitleEvtName, sizeof(gTitleEvtName) - 1);
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}
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void SampleCode::TitleR(SkEvent* evt, const char title[]) {
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SkASSERT(evt && TitleQ(*evt));
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evt->setString(gTitleEvtName, title);
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}
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bool SampleCode::PrefSizeQ(const SkEvent& evt) {
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return evt.isType(gPrefSizeEvtName, sizeof(gPrefSizeEvtName) - 1);
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}
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void SampleCode::PrefSizeR(SkEvent* evt, SkScalar width, SkScalar height) {
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SkASSERT(evt && PrefSizeQ(*evt));
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SkScalar size[2];
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size[0] = width;
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size[1] = height;
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evt->setScalars(gPrefSizeEvtName, 2, size);
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}
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//////////////////////////////////////////////////////////////////////////////
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class SampleWindow : public SkOSWindow {
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public:
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SampleWindow(void* hwnd);
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virtual ~SampleWindow();
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protected:
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virtual void onDraw(SkCanvas* canvas);
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virtual bool onHandleKey(SkKey key);
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virtual bool onHandleChar(SkUnichar);
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virtual void onSizeChange();
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virtual SkCanvas* beforeChildren(SkCanvas*);
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virtual void afterChildren(SkCanvas*);
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virtual bool onEvent(const SkEvent& evt);
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#if 0
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virtual bool handleChar(SkUnichar uni);
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virtual bool handleEvent(const SkEvent& evt);
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virtual bool handleKey(SkKey key);
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virtual bool handleKeyUp(SkKey key);
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virtual bool onClick(Click* click);
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virtual Click* onFindClickHandler(SkScalar x, SkScalar y);
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virtual bool onHandleKeyUp(SkKey key);
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#endif
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private:
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const SkViewRegister* fCurr;
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SkPicture* fPicture;
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SkGLCanvas* fGLCanvas;
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SkPath fClipPath;
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enum CanvasType {
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kRaster_CanvasType,
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kPicture_CanvasType,
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kOpenGL_CanvasType
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};
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CanvasType fCanvasType;
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bool fUseClip;
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bool fRepeatDrawing;
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bool fAnimating;
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int fScrollTestX, fScrollTestY;
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void loadView(SkView*);
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void updateTitle();
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bool nextSample();
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void postAnimatingEvent() {
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if (fAnimating) {
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SkEvent* evt = new SkEvent(ANIMATING_EVENTTYPE);
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evt->post(this->getSinkID(), ANIMATING_DELAY);
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}
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}
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static CanvasType cycle_canvastype(CanvasType);
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typedef SkOSWindow INHERITED;
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};
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SampleWindow::CanvasType SampleWindow::cycle_canvastype(CanvasType ct) {
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static const CanvasType gCT[] = {
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kPicture_CanvasType,
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kOpenGL_CanvasType,
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kRaster_CanvasType
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};
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return gCT[ct];
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}
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SampleWindow::SampleWindow(void* hwnd) : INHERITED(hwnd) {
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#ifdef SK_SUPPORT_GL
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init_gl((WindowRef)hwnd);
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#endif
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fPicture = NULL;
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fGLCanvas = NULL;
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fCanvasType = kRaster_CanvasType;
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fUseClip = false;
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fRepeatDrawing = false;
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fAnimating = false;
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fScrollTestX = fScrollTestY = 0;
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// this->setConfig(SkBitmap::kRGB_565_Config);
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this->setConfig(SkBitmap::kARGB_8888_Config);
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this->setVisibleP(true);
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fCurr = SkViewRegister::Head();
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this->loadView(fCurr->factory()());
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}
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SampleWindow::~SampleWindow() {
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delete fPicture;
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delete fGLCanvas;
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}
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void SampleWindow::onDraw(SkCanvas* canvas) {
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if (fRepeatDrawing) {
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this->inval(NULL);
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}
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}
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#include "SkColorPriv.h"
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static void reverseRedAndBlue(const SkBitmap& bm) {
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SkASSERT(bm.config() == SkBitmap::kARGB_8888_Config);
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uint8_t* p = (uint8_t*)bm.getPixels();
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uint8_t* stop = p + bm.getSize();
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while (p < stop) {
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// swap red/blue (to go from ARGB(int) to RGBA(memory) and premultiply
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unsigned scale = SkAlpha255To256(p[3]);
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unsigned r = p[2];
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unsigned b = p[0];
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p[0] = SkAlphaMul(r, scale);
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p[1] = SkAlphaMul(p[1], scale);
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p[2] = SkAlphaMul(b, scale);
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p += 4;
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}
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}
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SkCanvas* SampleWindow::beforeChildren(SkCanvas* canvas) {
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#ifdef SK_SUPPORT_GL
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#ifndef USE_OFFSCREEN
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aglSetWindowRef(gAGLContext, NULL);
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#endif
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#endif
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switch (fCanvasType) {
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case kRaster_CanvasType:
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canvas = this->INHERITED::beforeChildren(canvas);
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break;
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case kPicture_CanvasType:
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fPicture = new SkPicture;
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canvas = fPicture->beginRecording(9999, 9999);
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break;
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#ifdef SK_SUPPORT_GL
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case kOpenGL_CanvasType: {
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//SkGLCanvas::DeleteAllTextures(); // just for testing
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SkDevice* device = canvas->getDevice();
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const SkBitmap& bitmap = device->accessBitmap(true);
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// first clear the raster bitmap, so we don't see any leftover bits
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bitmap.eraseColor(0);
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// now setup our glcanvas
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setup_offscreen_gl(bitmap, (WindowRef)this->getHWND());
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fGLCanvas = new SkGLCanvas;
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fGLCanvas->setViewport(bitmap.width(), bitmap.height());
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canvas = fGLCanvas;
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break;
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}
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#endif
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}
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if (fUseClip) {
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canvas->drawColor(0xFFFF88FF);
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canvas->clipPath(fClipPath);
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}
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return canvas;
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}
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static void paint_rgn(const SkBitmap& bm, const SkIRect& r,
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const SkRegion& rgn) {
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SkCanvas canvas(bm);
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SkRegion inval(rgn);
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inval.translate(r.fLeft, r.fTop);
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canvas.clipRegion(inval);
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canvas.drawColor(0xFFFF8080);
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}
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void SampleWindow::afterChildren(SkCanvas* orig) {
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switch (fCanvasType) {
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case kRaster_CanvasType:
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break;
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case kPicture_CanvasType:
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if (false) {
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SkPicture* pict = new SkPicture(*fPicture);
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fPicture->unref();
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orig->drawPicture(*pict);
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pict->unref();
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} if (true) {
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SkDynamicMemoryWStream ostream;
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fPicture->serialize(&ostream);
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fPicture->unref();
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SkMemoryStream istream(ostream.getStream(), ostream.getOffset());
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SkPicture pict(&istream);
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orig->drawPicture(pict);
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} else {
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fPicture->draw(orig);
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fPicture->unref();
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}
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fPicture = NULL;
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break;
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#ifdef SK_SUPPORT_GL
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case kOpenGL_CanvasType:
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glFlush();
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delete fGLCanvas;
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fGLCanvas = NULL;
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#ifdef USE_OFFSCREEN
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reverseRedAndBlue(orig->getDevice()->accessBitmap(true));
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#endif
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break;
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#endif
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}
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// if ((fScrollTestX | fScrollTestY) != 0)
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{
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const SkBitmap& bm = orig->getDevice()->accessBitmap(true);
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int dx = fScrollTestX * 7;
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int dy = fScrollTestY * 7;
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SkIRect r;
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SkRegion inval;
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r.set(50, 50, 50+100, 50+100);
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bm.scrollRect(&r, dx, dy, &inval);
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paint_rgn(bm, r, inval);
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}
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}
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static SkBitmap::Config gConfigCycle[] = {
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SkBitmap::kNo_Config, // none -> none
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SkBitmap::kNo_Config, // a1 -> none
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SkBitmap::kNo_Config, // a8 -> none
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SkBitmap::kNo_Config, // index8 -> none
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SkBitmap::kARGB_4444_Config, // 565 -> 4444
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SkBitmap::kARGB_8888_Config, // 4444 -> 8888
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SkBitmap::kRGB_565_Config // 8888 -> 565
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};
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static SkBitmap::Config cycle_configs(SkBitmap::Config c) {
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return gConfigCycle[c];
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}
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bool SampleWindow::nextSample() {
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if (fCurr) {
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fCurr = fCurr->next();
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if (NULL == fCurr) {
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fCurr = SkViewRegister::Head();
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}
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this->loadView(fCurr->factory()());
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return true;
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}
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return false;
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}
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bool SampleWindow::onEvent(const SkEvent& evt) {
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if (evt.isType(ANIMATING_EVENTTYPE)) {
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if (fAnimating) {
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this->nextSample();
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this->postAnimatingEvent();
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}
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return true;
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}
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return this->INHERITED::onEvent(evt);
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}
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static void cleanup_for_filename(SkString* name) {
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char* str = name->writable_str();
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for (int i = 0; i < name->size(); i++) {
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switch (str[i]) {
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case ':': str[i] = '-'; break;
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case '/': str[i] = '-'; break;
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case ' ': str[i] = '_'; break;
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default: break;
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}
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}
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}
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bool SampleWindow::onHandleChar(SkUnichar uni) {
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int dx = 0xFF;
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int dy = 0xFF;
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switch (uni) {
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case '5': dx = 0; dy = 0; break;
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case '8': dx = 0; dy = -1; break;
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case '6': dx = 1; dy = 0; break;
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case '2': dx = 0; dy = 1; break;
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case '4': dx = -1; dy = 0; break;
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case '7': dx = -1; dy = -1; break;
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case '9': dx = 1; dy = -1; break;
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case '3': dx = 1; dy = 1; break;
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case '1': dx = -1; dy = 1; break;
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default:
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break;
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}
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if (0xFF != dx && 0xFF != dy) {
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if ((dx | dy) == 0) {
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fScrollTestX = fScrollTestY = 0;
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} else {
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fScrollTestX += dx;
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fScrollTestY += dy;
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}
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this->inval(NULL);
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return true;
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}
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switch (uni) {
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case 'a':
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fAnimating = !fAnimating;
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this->postAnimatingEvent();
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this->updateTitle();
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return true;
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case 'f': {
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const char* title = this->getTitle();
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if (title[0] == 0) {
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title = "sampleapp";
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}
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SkString name(title);
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cleanup_for_filename(&name);
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name.append(".png");
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if (SkImageEncoder::EncodeFile(name.c_str(), this->getBitmap(),
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SkImageEncoder::kPNG_Type)) {
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SkDebugf("Created %s\n", name.c_str());
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}
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return true;
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}
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default:
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break;
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}
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return this->INHERITED::onHandleChar(uni);
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}
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#include "SkDumpCanvas.h"
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bool SampleWindow::onHandleKey(SkKey key) {
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switch (key) {
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case kRight_SkKey:
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if (this->nextSample()) {
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return true;
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}
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break;
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case kLeft_SkKey:
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fCanvasType = cycle_canvastype(fCanvasType);
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this->updateTitle();
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this->inval(NULL);
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return true;
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case kUp_SkKey:
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fUseClip = !fUseClip;
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this->updateTitle();
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this->inval(NULL);
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return true;
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case kDown_SkKey:
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this->setConfig(cycle_configs(this->getBitmap().config()));
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this->updateTitle();
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return true;
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case kOK_SkKey:
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if (true) {
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SkDebugfDumper dumper;
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SkDumpCanvas dc(&dumper);
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this->draw(&dc);
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} else {
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fRepeatDrawing = !fRepeatDrawing;
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if (fRepeatDrawing) {
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this->inval(NULL);
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}
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}
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return true;
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default:
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break;
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}
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return this->INHERITED::onHandleKey(key);
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}
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void SampleWindow::loadView(SkView* view) {
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SkView::F2BIter iter(this);
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SkView* prev = iter.next();
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if (prev) {
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prev->detachFromParent();
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}
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view->setVisibleP(true);
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this->attachChildToFront(view)->unref();
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view->setSize(this->width(), this->height());
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this->updateTitle();
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}
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static const char* gConfigNames[] = {
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"unknown config",
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"A1",
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"A8",
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"Index8",
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"565",
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"4444",
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"8888"
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};
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static const char* configToString(SkBitmap::Config c) {
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return gConfigNames[c];
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}
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static const char* gCanvasTypePrefix[] = {
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"raster: ",
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"picture: ",
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"opengl: "
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};
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void SampleWindow::updateTitle() {
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SkString title;
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SkView::F2BIter iter(this);
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SkView* view = iter.next();
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SkEvent evt(gTitleEvtName);
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if (view->doQuery(&evt)) {
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title.set(evt.findString(gTitleEvtName));
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}
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if (title.size() == 0) {
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title.set("<unknown>");
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}
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title.prepend(gCanvasTypePrefix[fCanvasType]);
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title.prepend(" ");
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title.prepend(configToString(this->getBitmap().config()));
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if (fAnimating) {
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title.prepend("<A> ");
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}
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this->setTitle(title.c_str());
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}
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void SampleWindow::onSizeChange() {
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this->INHERITED::onSizeChange();
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SkView::F2BIter iter(this);
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SkView* view = iter.next();
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view->setSize(this->width(), this->height());
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|
|
|
// rebuild our clippath
|
|
{
|
|
const SkScalar W = this->width();
|
|
const SkScalar H = this->height();
|
|
|
|
fClipPath.reset();
|
|
#if 0
|
|
for (SkScalar y = SK_Scalar1; y < H; y += SkIntToScalar(32)) {
|
|
SkRect r;
|
|
r.set(SK_Scalar1, y, SkIntToScalar(30), y + SkIntToScalar(30));
|
|
for (; r.fLeft < W; r.offset(SkIntToScalar(32), 0))
|
|
fClipPath.addRect(r);
|
|
}
|
|
#else
|
|
SkRect r;
|
|
r.set(0, 0, W, H);
|
|
fClipPath.addRect(r, SkPath::kCCW_Direction);
|
|
r.set(W/4, H/4, W*3/4, H*3/4);
|
|
fClipPath.addRect(r, SkPath::kCW_Direction);
|
|
#endif
|
|
}
|
|
|
|
this->updateTitle(); // to refresh our config
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
SkOSWindow* create_sk_window(void* hwnd) {
|
|
return new SampleWindow(hwnd);
|
|
}
|
|
|
|
void get_preferred_size(int* x, int* y, int* width, int* height) {
|
|
*x = 10;
|
|
*y = 50;
|
|
*width = 640;
|
|
*height = 480;
|
|
}
|
|
|
|
void application_init() {
|
|
// setenv("ANDROID_ROOT", "../../../data", 0);
|
|
setenv("ANDROID_ROOT", "/android/device/data", 0);
|
|
SkGraphics::Init(true);
|
|
SkEvent::Init();
|
|
}
|
|
|
|
void application_term() {
|
|
SkEvent::Term();
|
|
SkGraphics::Term();
|
|
}
|