int MainWindow::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
{
_id = QMainWindow::qt_metacall(_c, _id, _a);
if (_id < 0)
return _id;
if (_c == QMetaObject::InvokeMetaMethod) {
switch (_id) {
case 0: openFile(); break;
case 1: applyChanges(); break;
case 2: saveFile(); break;
case 3: exit(); break;
case 4: effects(); break;
case 5: zoom(); break;
case 6: resize(); break;
case 7: crop(); break;
case 8: rotateRight(); break;
case 9: rotateLeft(); break;
case 10: mirror(); break;
case 11: reflection(); break;
case 12: grayScale(); break;
case 13: xray(); break;
case 14: sepia(); break;
default: ;
}
_id -= 15;
}
return _id;
}
// Find and display contours in image s.
//
DemoDisplay(const cv::Mat &s):
sourceImage(s), grayImage(grayScale(s)), bar(23), maxBar(100)
{
sourceImage.copyTo(cornersImage);
makeWindow("Corners", cornersImage);
makeTrackbar("Max Corners:", "Corners", &bar, maxBar);
}
QPixmap ImageFilter::operator ()(QPixmap sourcePixmap, Filter::FilterType filter, int delta)
{
QImage origin(sourcePixmap.toImage());
switch (filter)
{
case Filter::Gray_Scale:
return grayScale(origin);
break;
case Filter::Brightness:
return brightness(origin, delta);
break;
case Filter::Temperature:
return temperature(origin, delta);
break;
case Filter::Saturation:
return saturate(origin, delta);
break;
case Filter::Blur:
return blur(origin);
break;
case Filter::Sharpen:
return sharpen(origin);
break;
case Filter::Sepia:
return sepia(origin);
break;
}
}
void onDraw(SkCanvas* canvas) override {
canvas->drawColor(sk_tool_utils::color_to_565(SK_ColorGRAY));
SkPaint paint;
paint.setTypeface(emojiFont.typeface);
const char* text = emojiFont.text;
// draw text at different point sizes
const int textSize[] = { 10, 30, 50, };
const int textYOffset[] = { 10, 40, 100, };
SkASSERT(sizeof(textSize) == sizeof(textYOffset));
size_t y_offset = 0;
for (size_t y = 0; y < sizeof(textSize) / sizeof(int); y++) {
paint.setTextSize(SkIntToScalar(textSize[y]));
canvas->drawText(text, strlen(text), 10, SkIntToScalar(textYOffset[y]), paint);
y_offset += textYOffset[y];
}
// draw with shaders and image filters
for (int makeLinear = 0; makeLinear < 2; makeLinear++) {
for (int makeBlur = 0; makeBlur < 2; makeBlur++) {
for (int makeGray = 0; makeGray < 2; makeGray++) {
SkPaint shaderPaint;
shaderPaint.setTypeface(paint.getTypeface());
if (SkToBool(makeLinear)) {
shaderPaint.setShader(MakeLinear())->unref();
}
if (SkToBool(makeBlur) && SkToBool(makeGray)) {
SkAutoTUnref<SkImageFilter> grayScale(make_grayscale(nullptr));
SkAutoTUnref<SkImageFilter> blur(make_blur(3.0f, grayScale));
shaderPaint.setImageFilter(blur);
} else if (SkToBool(makeBlur)) {
SkAutoTUnref<SkImageFilter> blur(make_blur(3.0f, nullptr));
shaderPaint.setImageFilter(blur);
} else if (SkToBool(makeGray)) {
SkAutoTUnref<SkImageFilter> grayScale(make_grayscale(nullptr));
shaderPaint.setImageFilter(grayScale);
}
shaderPaint.setTextSize(30);
canvas->drawText(text, strlen(text), 380, SkIntToScalar(y_offset),
shaderPaint);
y_offset += 32;
}
}
}
// setup work needed to draw text with different clips
canvas->translate(10, 160);
paint.setTextSize(40);
// compute the bounds of the text
SkRect bounds;
paint.measureText(text, strlen(text), &bounds);
const SkScalar boundsHalfWidth = bounds.width() * SK_ScalarHalf;
const SkScalar boundsHalfHeight = bounds.height() * SK_ScalarHalf;
const SkScalar boundsQuarterWidth = boundsHalfWidth * SK_ScalarHalf;
const SkScalar boundsQuarterHeight = boundsHalfHeight * SK_ScalarHalf;
SkRect upperLeftClip = SkRect::MakeXYWH(bounds.left(), bounds.top(),
boundsHalfWidth, boundsHalfHeight);
SkRect lowerRightClip = SkRect::MakeXYWH(bounds.centerX(), bounds.centerY(),
boundsHalfWidth, boundsHalfHeight);
SkRect interiorClip = bounds;
interiorClip.inset(boundsQuarterWidth, boundsQuarterHeight);
const SkRect clipRects[] = { bounds, upperLeftClip, lowerRightClip, interiorClip };
SkPaint clipHairline;
clipHairline.setColor(SK_ColorWHITE);
clipHairline.setStyle(SkPaint::kStroke_Style);
for (size_t x = 0; x < sizeof(clipRects) / sizeof(SkRect); ++x) {
canvas->save();
canvas->drawRect(clipRects[x], clipHairline);
paint.setAlpha(0x20);
canvas->drawText(text, strlen(text), 0, 0, paint);
canvas->clipRect(clipRects[x]);
paint.setAlpha(0xFF);
canvas->drawText(text, strlen(text), 0, 0, paint);
canvas->restore();
canvas->translate(0, bounds.height() + SkIntToScalar(25));
}
}
