virtual void onDraw(SkCanvas* canvas) {
SkPaint paint;
SkScalar horizMargin(SkIntToScalar(10));
SkScalar vertMargin(SkIntToScalar(10));
SkBitmapDevice devTmp(SkBitmap::kARGB_8888_Config, 40, 40, false);
SkCanvas canvasTmp(&devTmp);
draw_checks(&canvasTmp, 40, 40);
SkBitmap src = canvasTmp.getTopDevice()->accessBitmap(false);
for (unsigned i = 0; i < NUM_CONFIGS; ++i) {
if (!src.deepCopyTo(&fDst[i], gConfigs[i])) {
src.copyTo(&fDst[i], gConfigs[i]);
}
}
canvas->clear(0xFFDDDDDD);
paint.setAntiAlias(true);
SkScalar width = SkIntToScalar(40);
SkScalar height = SkIntToScalar(40);
if (paint.getFontSpacing() > height) {
height = paint.getFontSpacing();
}
for (unsigned i = 0; i < NUM_CONFIGS; i++) {
const char* name = gConfigNames[src.config()];
SkScalar textWidth = paint.measureText(name, strlen(name));
if (textWidth > width) {
width = textWidth;
}
}
SkScalar horizOffset = width + horizMargin;
SkScalar vertOffset = height + vertMargin;
canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
for (unsigned i = 0; i < NUM_CONFIGS; i++) {
canvas->save();
// Draw destination config name
const char* name = gConfigNames[fDst[i].config()];
SkScalar textWidth = paint.measureText(name, strlen(name));
SkScalar x = (width - textWidth) / SkScalar(2);
SkScalar y = paint.getFontSpacing() / SkScalar(2);
canvas->drawText(name, strlen(name), x, y, paint);
// Draw destination bitmap
canvas->translate(0, vertOffset);
x = (width - 40) / SkScalar(2);
canvas->drawBitmap(fDst[i], x, 0, &paint);
canvas->restore();
canvas->translate(horizOffset, 0);
}
}
virtual void onDraw(SkCanvas* canvas) {
SkPaint paint;
SkScalar horizMargin = 10;
SkScalar vertMargin = 10;
SkBitmap src;
src.allocN32Pixels(40, 40);
SkCanvas canvasTmp(src);
draw_checks(&canvasTmp, 40, 40);
for (unsigned i = 0; i < NUM_CONFIGS; ++i) {
src.copyTo(&fDst[i], gColorTypes[i]);
}
canvas->clear(0xFFDDDDDD);
paint.setAntiAlias(true);
sk_tool_utils::set_portable_typeface(&paint);
SkScalar width = SkIntToScalar(40);
SkScalar height = SkIntToScalar(40);
if (paint.getFontSpacing() > height) {
height = paint.getFontSpacing();
}
for (unsigned i = 0; i < NUM_CONFIGS; i++) {
const char* name = gColorTypeNames[src.colorType()];
SkScalar textWidth = paint.measureText(name, strlen(name));
if (textWidth > width) {
width = textWidth;
}
}
SkScalar horizOffset = width + horizMargin;
SkScalar vertOffset = height + vertMargin;
canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
for (unsigned i = 0; i < NUM_CONFIGS; i++) {
canvas->save();
// Draw destination config name
const char* name = gColorTypeNames[fDst[i].colorType()];
SkScalar textWidth = paint.measureText(name, strlen(name));
SkScalar x = (width - textWidth) / SkScalar(2);
SkScalar y = paint.getFontSpacing() / SkScalar(2);
canvas->drawText(name, strlen(name), x, y, paint);
// Draw destination bitmap
canvas->translate(0, vertOffset);
x = (width - 40) / SkScalar(2);
canvas->drawBitmap(fDst[i], x, 0, &paint);
canvas->restore();
canvas->translate(horizOffset, 0);
}
}
void onDrawContent(SkCanvas* canvas) override {
SkPaint paint;
SkSafeUnref(paint.setTypeface(SkTypeface::CreateFromFile("/skimages/samplefont.ttf")));
paint.setAntiAlias(true);
paint.setFilterQuality(kMedium_SkFilterQuality);
SkString outString("fps: ");
fTimer.end();
// TODO: generalize this timing code in utils
fTimes[fCurrentTime] = (float)(fTimer.fWall);
fCurrentTime = (fCurrentTime + 1) & 0x1f;
float meanTime = 0.0f;
for (int i = 0; i < 32; ++i) {
meanTime += fTimes[i];
}
meanTime /= 32.f;
SkScalar fps = 1000.f / meanTime;
outString.appendScalar(fps);
outString.append(" ms: ");
outString.appendScalar(meanTime);
SkString modeString("Text scale: ");
modeString.appendU32(fSizeScale);
modeString.append("x");
fTimer.start();
canvas->save();
#if SK_SUPPORT_GPU
SkBaseDevice* device = canvas->getDevice_just_for_deprecated_compatibility_testing();
GrContext* grContext = canvas->getGrContext();
if (grContext) {
GrTexture* tex = grContext->getFontAtlasTexture(GrMaskFormat::kA8_GrMaskFormat);
reinterpret_cast<SkGpuDevice*>(device)->drawTexture(tex,
SkRect::MakeXYWH(512, 10, 512, 512), paint);
}
#endif
canvas->translate(180, 180);
canvas->rotate(fRotation);
canvas->scale(fScale, fScale);
canvas->translate(-180, -180);
const char* text = "Hamburgefons";
size_t length = strlen(text);
SkScalar y = SkIntToScalar(0);
for (int i = 12; i <= 26; i++) {
paint.setTextSize(SkIntToScalar(i*fSizeScale));
y += paint.getFontSpacing();
DrawTheText(canvas, text, length, SkIntToScalar(110), y, paint);
}
canvas->restore();
paint.setTextSize(16);
// canvas->drawText(outString.c_str(), outString.size(), 512.f, 540.f, paint);
canvas->drawText(modeString.c_str(), modeString.size(), 768.f, 540.f, paint);
}
void onDraw(SkCanvas* canvas) override {
canvas->save();
SkPaint paint;
paint.setAntiAlias(true);
sk_tool_utils::set_portable_typeface(&paint);
paint.setTextSize(SkIntToScalar(56));
SkScalar x = SkIntToScalar(20);
SkScalar y = paint.getTextSize();
SkString str("Hamburgefons");
for (int i = 0; i < static_cast<int>(SK_ARRAY_COUNT(gRastProcs)); i++) {
apply_shader(&paint, i);
// paint.setMaskFilter(NULL);
// paint.setColor(SK_ColorBLACK);
canvas->drawText(str.c_str(), str.size(), x, y, paint);
y += paint.getFontSpacing();
}
canvas->restore();
}
int main (int argc, char * const argv[]) {
SkAutoGraphics ag;
SkString path("skhello.png");
SkString text("Hello");
for (int i = 1; i < argc; i++) {
if (!strcmp(argv[i], "--help")) {
show_help();
return 0;
}
if (!strcmp(argv[i], "-o")) {
if (i == argc-1) {
SkDebugf("ERROR: -o needs a following filename\n");
return -1;
}
path.set(argv[i+1]);
i += 1; // skip the out dir name
} else if (!strcmp(argv[i], "-t")) {
if (i == argc-1) {
SkDebugf("ERROR: -t needs a following string\n");
return -1;
}
text.set(argv[i+1]);
i += 1; // skip the text string
}
}
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextSize(SkIntToScalar(30));
SkScalar width = paint.measureText(text.c_str(), text.size());
SkScalar spacing = paint.getFontSpacing();
int w = SkScalarRound(width) + 30;
int h = SkScalarRound(spacing) + 30;
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kARGB_8888_Config, w, h);
bitmap.allocPixels();
SkCanvas canvas(bitmap);
canvas.drawColor(SK_ColorWHITE);
paint.setTextAlign(SkPaint::kCenter_Align);
canvas.drawText(text.c_str(), text.size(),
SkIntToScalar(w)/2, SkIntToScalar(h)*2/3,
paint);
bool success = SkImageEncoder::EncodeFile(path.c_str(), bitmap,
SkImageEncoder::kPNG_Type, 100);
if (!success) {
SkDebugf("--- failed to write %s\n", path.c_str());
}
return !success;
}
static void test_text(SkCanvas* canvas, SkScalar size,
SkColor color, SkScalar Y) {
SkPaint type;
type.setTextSize(24);
sk_tool_utils::set_portable_typeface(&type);
type.setColor(color);
const char text[] = "HELLO WORLD";
canvas->drawText(text, strlen(text), 32, size / 2 + Y, type);
SkScalar lineSpacing = type.getFontSpacing();
exercise_draw_pos_text(canvas, text, 32, size / 2 + Y + lineSpacing, type);
exercise_draw_pos_text_h(canvas, text, 32,
size / 2 + Y + 2 * lineSpacing, type);
}
JNIEXPORT void JNICALL Java_com_example_HelloSkiaActivity_drawIntoBitmap(JNIEnv* env,
jobject thiz, jobject dstBitmap, jlong elapsedTime)
{
// Grab the dst bitmap info and pixels
AndroidBitmapInfo dstInfo;
void* dstPixels;
AndroidBitmap_getInfo(env, dstBitmap, &dstInfo);
AndroidBitmap_lockPixels(env, dstBitmap, &dstPixels);
SkImageInfo info = SkImageInfo::MakeN32Premul(dstInfo.width, dstInfo.height);
// Create a surface from the given bitmap
SkAutoTUnref<SkSurface> surface(SkSurface::NewRasterDirect(info, dstPixels, dstInfo.stride));
SkCanvas* canvas = surface->getCanvas();
// Draw something "interesting"
// Clear the canvas with a white color
canvas->drawColor(SK_ColorWHITE);
// Setup a SkPaint for drawing our text
SkPaint paint;
paint.setColor(SK_ColorBLACK); // This is a solid black color for our text
paint.setTextSize(SkIntToScalar(30)); // Sets the text size to 30 pixels
paint.setAntiAlias(true); // We turn on anti-aliasing so that the text to looks good.
// Draw some text
SkString text("Skia is Best!");
SkScalar fontHeight = paint.getFontSpacing();
canvas->drawText(text.c_str(), text.size(), // text's data and length
10, fontHeight, // X and Y coordinates to place the text
paint); // SkPaint to tell how to draw the text
// Adapt the SkPaint for drawing blue lines
paint.setAntiAlias(false); // Turning off anti-aliasing speeds up the line drawing
paint.setColor(0xFF0000FF); // This is a solid blue color for our lines
paint.setStrokeWidth(SkIntToScalar(2)); // This makes the lines have a thickness of 2 pixels
// Draw some interesting lines using trig functions
for (int i = 0; i < 100; i++)
{
float x = (float)i / 99.0f;
float offset = elapsedTime / 1000.0f;
canvas->drawLine(sin(x * M_PI + offset) * 800.0f, 0, // first endpoint
cos(x * M_PI + offset) * 800.0f, 800, // second endpoint
paint); // SkPapint to tell how to draw the line
}
// Unlock the dst's pixels
AndroidBitmap_unlockPixels(env, dstBitmap);
}
virtual void onDrawContent(SkCanvas* canvas) {
SkAutoCanvasRestore restore(canvas, false);
{
SkRect r;
r.set(0, 0, SkIntToScalar(1000), SkIntToScalar(20));
// canvas->saveLayer(&r, NULL, SkCanvas::kHasAlphaLayer_SaveFlag);
}
SkPaint paint;
// const uint16_t glyphs[] = { 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19 };
int index = fHints % SK_ARRAY_COUNT(gHints);
index = 1;
// const char* style = gHints[index].fName;
// canvas->translate(0, SkIntToScalar(50));
// canvas->drawText(style, strlen(style), SkIntToScalar(20), SkIntToScalar(20), paint);
SkSafeUnref(paint.setTypeface(SkTypeface::CreateFromFile("/skimages/samplefont.ttf")));
paint.setAntiAlias(true);
paint.setFlags(paint.getFlags() | gHints[index].fFlags);
SkRect clip;
clip.set(SkIntToScalar(25), SkIntToScalar(34), SkIntToScalar(88), SkIntToScalar(155));
const char* text = "Hamburgefons";
size_t length = strlen(text);
SkScalar y = SkIntToScalar(0);
for (int i = 9; i <= 24; i++) {
paint.setTextSize(SkIntToScalar(i) /*+ (gRand.nextU() & 0xFFFF)*/);
for (SkScalar dx = 0; dx <= SkIntToScalar(3)/4;
dx += SkIntToScalar(1) /* /4 */) {
y += paint.getFontSpacing();
DrawTheText(canvas, text, length, SkIntToScalar(20) + dx, y,
paint, fClickX, fMF);
}
}
if (gHints[index].fFlushCache) {
// SkGraphics::SetFontCacheUsed(0);
}
}
void drawTest(SkCanvas* canvas, SkScalar w, SkScalar h, SkColor fg, SkColor bg) {
SkAutoCanvasRestore acr(canvas, true);
canvas->clipRect(SkRect::MakeWH(w, h));
canvas->drawColor(bg);
SkScalar margin = 20;
SkTextBox tbox;
tbox.setMode(SkTextBox::kLineBreak_Mode);
tbox.setBox(margin, margin,
w - margin, h - margin);
tbox.setSpacing(SkIntToScalar(3)/3, 0);
SkPaint paint;
paint.setAntiAlias(true);
paint.setLCDRenderText(true);
paint.setColor(fg);
tbox.setText(gText, strlen(gText), paint);
for (int i = 9; i < 24; i += 2) {
paint.setTextSize(SkIntToScalar(i));
tbox.draw(canvas);
canvas->translate(0, tbox.getTextHeight() + paint.getFontSpacing());
}
}
