kotatogram/lib_ui
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Allow fully custom QImage shadows.

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This commit is contained in:
John Preston 2023-01-06 17:05:24 +04:00
parent 28a51f1ec7
commit 3cb645f507
3 changed files with 85 additions and 34 deletions
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2
ui/layers/layer_widget.cpp
View file

@ -259,7 +259,7 @@ void LayerStackWidget::BackgroundWidget::paintEvent(QPaintEvent *e) {
if (topCorners || bottomCorners) {
p.setClipRegion(QRegion(rect()) - specialLayerBox.marginsRemoved(QMargins(st::boxRadius, 0, st::boxRadius, 0)) - specialLayerBox.marginsRemoved(QMargins(0, st::boxRadius, 0, st::boxRadius)));
}
Ui::Shadow::paint(p, specialLayerBox, width(), st::boxRoundShadow, sides, Ui::SpecialLayerShadowCorners());
Ui::Shadow::paint(p, specialLayerBox, width(), st::boxRoundShadow, Ui::SpecialLayerShadowCorners(), sides);
if (topCorners || bottomCorners) {
p.setClipping(false);
}

107
ui/widgets/shadow.cpp
View file

@ -16,35 +16,53 @@
namespace Ui {
namespace {
struct CustomImage {
public:
explicit CustomImage(const QImage &image)
: _image(image) {
}
void paint(QPainter &p, int x, int y, int outerw) const {
p.drawImage(x, y, _image);
}
void fill(QPainter &p, QRect rect) const {
p.drawImage(rect, _image);
}
[[nodiscard]] bool empty() const {
return _image.isNull();
}
[[nodiscard]] int width() const {
return _image.width() / style::DevicePixelRatio();
}
[[nodiscard]] int height() const {
return _image.height() / style::DevicePixelRatio();
}
private:
const QImage &_image;
};
struct CustomShadowCorners {
struct Image {
public:
Image(const QImage &image)
: _image(image) {
}
void paint(QPainter &p, int x, int y, int outerw) const {
p.drawImage(x, y, _image);
}
[[nodiscard]] bool empty() const {
return _image.isNull();
}
[[nodiscard]] int width() const {
return _image.width() / style::DevicePixelRatio();
}
[[nodiscard]] int height() const {
return _image.height() / style::DevicePixelRatio();
}
private:
const QImage &_image;
};
const style::icon &left;
Image topLeft;
CustomImage topLeft;
const style::icon ⊤
Image topRight;
CustomImage topRight;
const style::icon &right;
Image bottomRight;
CustomImage bottomRight;
const style::icon ⊥
Image bottomLeft;
CustomImage bottomLeft;
const style::margins &extend;
};
struct CustomShadow {
CustomImage left;
CustomImage topLeft;
CustomImage top;
CustomImage topRight;
CustomImage right;
CustomImage bottomRight;
CustomImage bottom;
CustomImage bottomLeft;
const style::margins &extend;
};
@ -121,7 +139,7 @@ void PlainShadow::paintEvent(QPaintEvent *e) {
}
void Shadow::paint(QPainter &p, const QRect &box, int outerWidth, const style::Shadow &st, RectParts sides) {
ShadowPaint<style::Shadow>(p, box, outerWidth, st, std::move(sides));
ShadowPaint<style::Shadow>(p, box, outerWidth, st, sides);
}
void Shadow::paint(
@ -129,20 +147,45 @@ void Shadow::paint(
const QRect &box,
int outerWidth,
const style::Shadow &st,
RectParts sides,
const std::array<QImage, 4> &corners) {
const std::array<QImage, 4> &corners,
RectParts sides) {
const auto shadow = CustomShadowCorners{
.left = st.left,
.topLeft = CustomShadowCorners::Image(corners[0]),
.topLeft = CustomImage(corners[0]),
.top = st.top,
.topRight = CustomShadowCorners::Image(corners[2]),
.topRight = CustomImage(corners[2]),
.right = st.right,
.bottomRight = CustomShadowCorners::Image(corners[3]),
.bottomRight = CustomImage(corners[3]),
.bottom = st.bottom,
.bottomLeft = CustomShadowCorners::Image(corners[1]),
.bottomLeft = CustomImage(corners[1]),
.extend = st.extend,
};
ShadowPaint<CustomShadowCorners>(p, box, outerWidth, shadow, std::move(sides));
ShadowPaint<CustomShadowCorners>(p, box, outerWidth, shadow, sides);
}
void Shadow::paint(
QPainter &p,
const QRect &box,
int outerWidth,
const style::Shadow &st,
const std::array<QImage, 4> &sides,
const std::array<QImage, 4> &corners) {
const auto shadow = CustomShadow{
.left = CustomImage(sides[0]),
.topLeft = CustomImage(corners[0]),
.top = CustomImage(sides[1]),
.topRight = CustomImage(corners[2]),
.right = CustomImage(sides[2]),
.bottomRight = CustomImage(corners[3]),
.bottom = CustomImage(sides[3]),
.bottomLeft = CustomImage(corners[1]),
.extend = st.extend,
};
ShadowPaint<CustomShadow>(p, box, outerWidth, shadow, RectPart()
| (sides[0].isNull() ? RectPart() : RectPart::Left)
| (sides[1].isNull() ? RectPart() : RectPart::Top)
| (sides[2].isNull() ? RectPart() : RectPart::Right)
| (sides[3].isNull() ? RectPart() : RectPart::Bottom));
}
QPixmap Shadow::grab(

10
ui/widgets/shadow.h
View file

@ -51,7 +51,15 @@ public:
const QRect &box,
int outerWidth,
const style::Shadow &st,
RectParts sides,
const std::array<QImage, 4> &corners,
RectParts sides = RectPart::AllSides);
static void paint(
QPainter &p,
const QRect &box,
int outerWidth,
const style::Shadow &st,
const std::array<QImage, 4> &sides,
const std::array<QImage, 4> &corners);
static QPixmap grab(