show LCD on max fat-zoom
BUG=skia: TBR= Review URL: https://codereview.chromium.org/1295483003
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@ -44,6 +44,9 @@
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class GrContext;
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#endif
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// Should be 3x + 1
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#define kMaxFatBitsScale 28
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extern SampleView* CreateSamplePictFileView(const char filename[]);
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class PictFileFactory : public SkViewFactory {
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@ -634,31 +637,27 @@ bool SampleWindow::sendAnimatePulse() {
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return false;
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}
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void SampleWindow::setZoomCenter(float x, float y)
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{
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void SampleWindow::setZoomCenter(float x, float y) {
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fZoomCenterX = x;
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fZoomCenterY = y;
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}
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bool SampleWindow::zoomIn()
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{
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bool SampleWindow::zoomIn() {
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// Arbitrarily decided
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if (fFatBitsScale == 25) return false;
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if (fFatBitsScale == kMaxFatBitsScale) return false;
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fFatBitsScale++;
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this->inval(NULL);
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return true;
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}
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bool SampleWindow::zoomOut()
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{
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bool SampleWindow::zoomOut() {
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if (fFatBitsScale == 1) return false;
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fFatBitsScale--;
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this->inval(NULL);
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return true;
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}
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void SampleWindow::updatePointer(int x, int y)
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{
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void SampleWindow::updatePointer(int x, int y) {
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fMouseX = x;
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fMouseY = y;
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if (fShowZoomer) {
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@ -1079,89 +1078,162 @@ void SampleWindow::magnify(SkCanvas* canvas) {
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canvas->restoreToCount(count);
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}
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void SampleWindow::showZoomer(SkCanvas* canvas) {
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int count = canvas->save();
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canvas->resetMatrix();
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// Ensure the mouse position is on screen.
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int width = SkScalarRoundToInt(this->width());
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int height = SkScalarRoundToInt(this->height());
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if (fMouseX >= width) fMouseX = width - 1;
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else if (fMouseX < 0) fMouseX = 0;
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if (fMouseY >= height) fMouseY = height - 1;
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else if (fMouseY < 0) fMouseY = 0;
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static SkPaint& set_color_ref(SkPaint& paint, SkColor c) {
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paint.setColor(c);
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return paint;
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}
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SkBitmap bitmap = capture_bitmap(canvas);
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bitmap.lockPixels();
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static void show_lcd_box(SkCanvas* canvas, SkScalar x, SkScalar y, SkColor c,
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SkScalar sx, SkScalar sy) {
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const SkScalar w = (1 - 1/sx) / 3;
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SkPaint paint;
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SkRect r = SkRect::MakeXYWH(x, y, w, 1 - 1/sy);
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canvas->drawRect(r, set_color_ref(paint, SkColorSetRGB(SkColorGetR(c), 0, 0)));
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r.offset(w, 0);
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canvas->drawRect(r, set_color_ref(paint, SkColorSetRGB(0, SkColorGetG(c), 0)));
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r.offset(w, 0);
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canvas->drawRect(r, set_color_ref(paint, SkColorSetRGB(0, 0, SkColorGetB(c))));
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}
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// Find the size of the zoomed in view, forced to be odd, so the examined pixel is in the middle.
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int zoomedWidth = (width >> 1) | 1;
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int zoomedHeight = (height >> 1) | 1;
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SkIRect src;
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src.set(0, 0, zoomedWidth / fFatBitsScale, zoomedHeight / fFatBitsScale);
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src.offset(fMouseX - (src.width()>>1), fMouseY - (src.height()>>1));
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SkRect dest;
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dest.set(0, 0, SkIntToScalar(zoomedWidth), SkIntToScalar(zoomedHeight));
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dest.offset(SkIntToScalar(width - zoomedWidth), SkIntToScalar(height - zoomedHeight));
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SkPaint paint;
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// Clear the background behind our zoomed in view
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paint.setColor(SK_ColorWHITE);
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canvas->drawRect(dest, paint);
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canvas->drawBitmapRect(bitmap, src, dest, NULL);
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paint.setColor(SK_ColorBLACK);
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paint.setStyle(SkPaint::kStroke_Style);
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// Draw a border around the pixel in the middle
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SkRect originalPixel;
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originalPixel.set(SkIntToScalar(fMouseX), SkIntToScalar(fMouseY), SkIntToScalar(fMouseX + 1), SkIntToScalar(fMouseY + 1));
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SkMatrix matrix;
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SkRect scalarSrc;
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scalarSrc.set(src);
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SkColor color = bitmap.getColor(fMouseX, fMouseY);
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if (matrix.setRectToRect(scalarSrc, dest, SkMatrix::kFill_ScaleToFit)) {
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SkRect pixel;
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matrix.mapRect(&pixel, originalPixel);
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// TODO Perhaps measure the values and make the outline white if it's "dark"
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if (color == SK_ColorBLACK) {
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paint.setColor(SK_ColorWHITE);
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}
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canvas->drawRect(pixel, paint);
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static void show_lcd_circle(SkCanvas* canvas, SkScalar x, SkScalar y, SkColor c,
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SkScalar, SkScalar) {
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const SkRect r = SkRect::MakeXYWH(x, y, 1, 1);
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const SkScalar cx = x + 0.5f;
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const SkScalar cy = y + 0.5f;
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SkPaint paint;
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paint.setAntiAlias(true);
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SkPath path;
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path.addArc(r, 0, 120); path.lineTo(cx, cy);
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canvas->drawPath(path, set_color_ref(paint, SkColorSetRGB(SkColorGetR(c), 0, 0)));
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path.reset(); path.addArc(r, 120, 120); path.lineTo(cx, cy);
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canvas->drawPath(path, set_color_ref(paint, SkColorSetRGB(0, SkColorGetG(c), 0)));
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path.reset(); path.addArc(r, 240, 120); path.lineTo(cx, cy);
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canvas->drawPath(path, set_color_ref(paint, SkColorSetRGB(0, 0, SkColorGetB(c))));
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}
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typedef void (*ShowLCDProc)(SkCanvas*, SkScalar, SkScalar, SkColor, SkScalar, SkScalar);
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/*
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* Like drawBitmapRect but we manually draw each pixels in RGB
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*/
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static void show_lcd_grid(SkCanvas* canvas, const SkBitmap& bitmap,
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const SkIRect& origSrc, const SkRect& dst) {
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SkIRect src;
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if (!src.intersect(origSrc, bitmap.bounds())) {
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return;
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}
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const SkScalar sx = dst.width() / src.width();
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const SkScalar sy = dst.height() / src.height();
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SkAutoCanvasRestore acr(canvas, true);
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canvas->translate(dst.left(), dst.top());
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canvas->scale(sx, sy);
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ShowLCDProc proc = show_lcd_box;
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if (true) {
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proc = show_lcd_circle;
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}
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for (int y = 0; y < src.height(); ++y) {
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for (int x = 0; x < src.width(); ++x) {
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proc(canvas, SkIntToScalar(x), SkIntToScalar(y),
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bitmap.getColor(src.left() + x, src.top() + y), sx, sy);
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}
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paint.setColor(SK_ColorBLACK);
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// Draw a border around the destination rectangle
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canvas->drawRect(dest, paint);
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paint.setStyle(SkPaint::kStrokeAndFill_Style);
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// Identify the pixel and its color on screen
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paint.setTypeface(fTypeface);
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paint.setAntiAlias(true);
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SkScalar lineHeight = paint.getFontMetrics(NULL);
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SkString string;
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string.appendf("(%i, %i)", fMouseX, fMouseY);
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SkScalar left = dest.fLeft + SkIntToScalar(3);
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SkScalar i = SK_Scalar1;
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drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
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// Alpha
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i += SK_Scalar1;
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string.reset();
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string.appendf("A: %X", SkColorGetA(color));
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drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
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// Red
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i += SK_Scalar1;
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string.reset();
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string.appendf("R: %X", SkColorGetR(color));
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paint.setColor(SK_ColorRED);
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drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
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// Green
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i += SK_Scalar1;
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string.reset();
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string.appendf("G: %X", SkColorGetG(color));
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paint.setColor(SK_ColorGREEN);
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drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
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// Blue
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i += SK_Scalar1;
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string.reset();
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string.appendf("B: %X", SkColorGetB(color));
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paint.setColor(SK_ColorBLUE);
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drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
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canvas->restoreToCount(count);
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}
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}
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void SampleWindow::showZoomer(SkCanvas* canvas) {
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int count = canvas->save();
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canvas->resetMatrix();
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// Ensure the mouse position is on screen.
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int width = SkScalarRoundToInt(this->width());
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int height = SkScalarRoundToInt(this->height());
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if (fMouseX >= width) fMouseX = width - 1;
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else if (fMouseX < 0) fMouseX = 0;
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if (fMouseY >= height) fMouseY = height - 1;
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else if (fMouseY < 0) fMouseY = 0;
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SkBitmap bitmap = capture_bitmap(canvas);
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bitmap.lockPixels();
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// Find the size of the zoomed in view, forced to be odd, so the examined pixel is in the middle.
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int zoomedWidth = (width >> 1) | 1;
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int zoomedHeight = (height >> 1) | 1;
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SkIRect src;
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src.set(0, 0, zoomedWidth / fFatBitsScale, zoomedHeight / fFatBitsScale);
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src.offset(fMouseX - (src.width()>>1), fMouseY - (src.height()>>1));
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SkRect dest;
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dest.set(0, 0, SkIntToScalar(zoomedWidth), SkIntToScalar(zoomedHeight));
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dest.offset(SkIntToScalar(width - zoomedWidth), SkIntToScalar(height - zoomedHeight));
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SkPaint paint;
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// Clear the background behind our zoomed in view
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paint.setColor(SK_ColorWHITE);
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canvas->drawRect(dest, paint);
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if (fFatBitsScale < kMaxFatBitsScale) {
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canvas->drawBitmapRect(bitmap, src, dest, NULL);
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} else {
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show_lcd_grid(canvas, bitmap, src, dest);
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}
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paint.setColor(SK_ColorBLACK);
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paint.setStyle(SkPaint::kStroke_Style);
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// Draw a border around the pixel in the middle
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SkRect originalPixel;
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originalPixel.set(SkIntToScalar(fMouseX), SkIntToScalar(fMouseY), SkIntToScalar(fMouseX + 1), SkIntToScalar(fMouseY + 1));
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SkMatrix matrix;
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SkRect scalarSrc;
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scalarSrc.set(src);
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SkColor color = bitmap.getColor(fMouseX, fMouseY);
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if (matrix.setRectToRect(scalarSrc, dest, SkMatrix::kFill_ScaleToFit)) {
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SkRect pixel;
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matrix.mapRect(&pixel, originalPixel);
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// TODO Perhaps measure the values and make the outline white if it's "dark"
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if (color == SK_ColorBLACK) {
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paint.setColor(SK_ColorWHITE);
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}
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canvas->drawRect(pixel, paint);
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}
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paint.setColor(SK_ColorBLACK);
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// Draw a border around the destination rectangle
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canvas->drawRect(dest, paint);
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paint.setStyle(SkPaint::kStrokeAndFill_Style);
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// Identify the pixel and its color on screen
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paint.setTypeface(fTypeface);
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paint.setAntiAlias(true);
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SkScalar lineHeight = paint.getFontMetrics(NULL);
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SkString string;
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string.appendf("(%i, %i)", fMouseX, fMouseY);
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SkScalar left = dest.fLeft + SkIntToScalar(3);
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SkScalar i = SK_Scalar1;
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drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
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// Alpha
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i += SK_Scalar1;
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string.reset();
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string.appendf("A: %X", SkColorGetA(color));
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drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
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// Red
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i += SK_Scalar1;
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string.reset();
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string.appendf("R: %X", SkColorGetR(color));
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paint.setColor(SK_ColorRED);
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drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
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// Green
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i += SK_Scalar1;
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string.reset();
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string.appendf("G: %X", SkColorGetG(color));
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paint.setColor(SK_ColorGREEN);
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drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
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// Blue
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i += SK_Scalar1;
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string.reset();
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string.appendf("B: %X", SkColorGetB(color));
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paint.setColor(SK_ColorBLUE);
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drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
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canvas->restoreToCount(count);
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}
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void SampleWindow::onDraw(SkCanvas* canvas) {
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