421 lines
12 KiB
C++
421 lines
12 KiB
C++
// This file is part of Desktop App Toolkit,
|
|
// a set of libraries for developing nice desktop applications.
|
|
//
|
|
// For license and copyright information please follow this link:
|
|
// https://github.com/desktop-app/legal/blob/master/LEGAL
|
|
//
|
|
#include "ui/widgets/shadow.h"
|
|
|
|
#include "ui/image/image_prepare.h"
|
|
#include "ui/painter.h"
|
|
#include "ui/ui_utility.h"
|
|
#include "styles/style_widgets.h"
|
|
#include "styles/palette.h"
|
|
|
|
#include <QtGui/QPainter>
|
|
#include <QtGui/QtEvents>
|
|
|
|
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 {
|
|
const style::icon &left;
|
|
CustomImage topLeft;
|
|
const style::icon ⊤
|
|
CustomImage topRight;
|
|
const style::icon &right;
|
|
CustomImage bottomRight;
|
|
const style::icon ⊥
|
|
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;
|
|
};
|
|
|
|
template <typename Shadow>
|
|
void ShadowPaint(QPainter &p, const QRect &box, int outerWidth, const Shadow &st, RectParts sides) {
|
|
auto left = (sides & RectPart::Left);
|
|
auto top = (sides & RectPart::Top);
|
|
auto right = (sides & RectPart::Right);
|
|
auto bottom = (sides & RectPart::Bottom);
|
|
if (left) {
|
|
auto from = box.y();
|
|
auto to = from + box.height();
|
|
if (top && !st.topLeft.empty()) {
|
|
st.topLeft.paint(p, box.x() - st.extend.left(), box.y() - st.extend.top(), outerWidth);
|
|
from += st.topLeft.height() - st.extend.top();
|
|
}
|
|
if (bottom && !st.bottomLeft.empty()) {
|
|
st.bottomLeft.paint(p, box.x() - st.extend.left(), box.y() + box.height() + st.extend.bottom() - st.bottomLeft.height(), outerWidth);
|
|
to -= st.bottomLeft.height() - st.extend.bottom();
|
|
}
|
|
if (to > from && !st.left.empty()) {
|
|
st.left.fill(p, style::rtlrect(box.x() - st.extend.left(), from, st.left.width(), to - from, outerWidth));
|
|
}
|
|
}
|
|
if (right) {
|
|
auto from = box.y();
|
|
auto to = from + box.height();
|
|
if (top && !st.topRight.empty()) {
|
|
st.topRight.paint(p, box.x() + box.width() + st.extend.right() - st.topRight.width(), box.y() - st.extend.top(), outerWidth);
|
|
from += st.topRight.height() - st.extend.top();
|
|
}
|
|
if (bottom && !st.bottomRight.empty()) {
|
|
st.bottomRight.paint(p, box.x() + box.width() + st.extend.right() - st.bottomRight.width(), box.y() + box.height() + st.extend.bottom() - st.bottomRight.height(), outerWidth);
|
|
to -= st.bottomRight.height() - st.extend.bottom();
|
|
}
|
|
if (to > from && !st.right.empty()) {
|
|
st.right.fill(p, style::rtlrect(box.x() + box.width() + st.extend.right() - st.right.width(), from, st.right.width(), to - from, outerWidth));
|
|
}
|
|
}
|
|
if (top && !st.top.empty()) {
|
|
auto from = box.x();
|
|
auto to = from + box.width();
|
|
if (left && !st.topLeft.empty()) from += st.topLeft.width() - st.extend.left();
|
|
if (right && !st.topRight.empty()) to -= st.topRight.width() - st.extend.right();
|
|
if (to > from) {
|
|
st.top.fill(p, style::rtlrect(from, box.y() - st.extend.top(), to - from, st.top.height(), outerWidth));
|
|
}
|
|
}
|
|
if (bottom && !st.bottom.empty()) {
|
|
auto from = box.x();
|
|
auto to = from + box.width();
|
|
if (left && !st.bottomLeft.empty()) from += st.bottomLeft.width() - st.extend.left();
|
|
if (right && !st.bottomRight.empty()) to -= st.bottomRight.width() - st.extend.right();
|
|
if (to > from) {
|
|
st.bottom.fill(p, style::rtlrect(from, box.y() + box.height() + st.extend.bottom() - st.bottom.height(), to - from, st.bottom.height(), outerWidth));
|
|
}
|
|
}
|
|
}
|
|
|
|
} // namespace
|
|
|
|
PlainShadow::PlainShadow(QWidget *parent)
|
|
: PlainShadow(parent, st::shadowFg) {
|
|
}
|
|
|
|
PlainShadow::PlainShadow(QWidget *parent, style::color color)
|
|
: RpWidget(parent)
|
|
, _color(color) {
|
|
resize(st::lineWidth, st::lineWidth);
|
|
}
|
|
|
|
void PlainShadow::paintEvent(QPaintEvent *e) {
|
|
QPainter(this).fillRect(e->rect(), _color);
|
|
}
|
|
|
|
void Shadow::paint(QPainter &p, const QRect &box, int outerWidth, const style::Shadow &st, RectParts sides) {
|
|
ShadowPaint<style::Shadow>(p, box, outerWidth, st, sides);
|
|
}
|
|
|
|
void Shadow::paint(
|
|
QPainter &p,
|
|
const QRect &box,
|
|
int outerWidth,
|
|
const style::Shadow &st,
|
|
const std::array<QImage, 4> &corners,
|
|
RectParts sides) {
|
|
const auto shadow = CustomShadowCorners{
|
|
.left = st.left,
|
|
.topLeft = CustomImage(corners[0]),
|
|
.top = st.top,
|
|
.topRight = CustomImage(corners[2]),
|
|
.right = st.right,
|
|
.bottomRight = CustomImage(corners[3]),
|
|
.bottom = st.bottom,
|
|
.bottomLeft = CustomImage(corners[1]),
|
|
.extend = st.extend,
|
|
};
|
|
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(
|
|
not_null<RpWidget*> target,
|
|
const style::Shadow &shadow,
|
|
RectParts sides) {
|
|
SendPendingMoveResizeEvents(target);
|
|
auto rect = target->rect();
|
|
auto extend = QMargins(
|
|
(sides & RectPart::Left) ? shadow.extend.left() : 0,
|
|
(sides & RectPart::Top) ? shadow.extend.top() : 0,
|
|
(sides & RectPart::Right) ? shadow.extend.right() : 0,
|
|
(sides & RectPart::Bottom) ? shadow.extend.bottom() : 0
|
|
);
|
|
auto full = QRect(0, 0, extend.left() + rect.width() + extend.right(), extend.top() + rect.height() + extend.bottom());
|
|
auto result = QPixmap(full.size() * style::DevicePixelRatio());
|
|
result.setDevicePixelRatio(style::DevicePixelRatio());
|
|
result.fill(Qt::transparent);
|
|
{
|
|
QPainter p(&result);
|
|
Shadow::paint(p, full.marginsRemoved(extend), full.width(), shadow);
|
|
RenderWidget(p, target, QPoint(extend.left(), extend.top()));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void Shadow::paintEvent(QPaintEvent *e) {
|
|
QPainter p(this);
|
|
paint(p, rect().marginsRemoved(_st.extend), width(), _st, _sides);
|
|
}
|
|
|
|
BoxShadow::BoxShadow(const style::BoxShadow &st)
|
|
: _blurRadius(st.blurRadius)
|
|
, _offset(st.offset)
|
|
, _opacity(st.opacity) {
|
|
}
|
|
|
|
QMargins BoxShadow::ExtendFor(const style::BoxShadow &st) {
|
|
const auto blur = st.blurRadius;
|
|
const auto ox = st.offset.x();
|
|
const auto oy = st.offset.y();
|
|
return {
|
|
std::max(blur - ox, 0),
|
|
std::max(blur - oy, 0),
|
|
std::max(blur + ox, 0),
|
|
std::max(blur + oy, 0),
|
|
};
|
|
}
|
|
|
|
float64 BoxShadow::opacity() const {
|
|
return _opacity;
|
|
}
|
|
|
|
QMargins BoxShadow::extend() const {
|
|
const auto ox = _offset.x();
|
|
const auto oy = _offset.y();
|
|
return {
|
|
std::max(_blurRadius - ox, 0),
|
|
std::max(_blurRadius - oy, 0),
|
|
std::max(_blurRadius + ox, 0),
|
|
std::max(_blurRadius + oy, 0),
|
|
};
|
|
}
|
|
|
|
BoxShadow::Grid BoxShadow::preparedGrid(int cornerRadius) const {
|
|
prepare(cornerRadius);
|
|
return { _cache, _cornerL, _cornerT, _cornerR, _cornerB, _middle };
|
|
}
|
|
|
|
void BoxShadow::prepare(int cornerRadius) const {
|
|
if (_cornerRadius == cornerRadius) {
|
|
return;
|
|
}
|
|
_cornerRadius = cornerRadius;
|
|
_middle = 2;
|
|
|
|
const auto ext = extend();
|
|
_cornerL = ext.left() + cornerRadius;
|
|
_cornerT = ext.top() + cornerRadius;
|
|
_cornerR = ext.right() + cornerRadius;
|
|
_cornerB = ext.bottom() + cornerRadius;
|
|
|
|
const auto bodyW = 2 * cornerRadius + _middle;
|
|
const auto bodyH = bodyW;
|
|
const auto cacheW = _cornerL + _middle + _cornerR;
|
|
const auto cacheH = _cornerT + _middle + _cornerB;
|
|
|
|
const auto ratio = style::DevicePixelRatio();
|
|
auto image = QImage(
|
|
QSize(cacheW, cacheH) * ratio,
|
|
QImage::Format_ARGB32_Premultiplied);
|
|
image.setDevicePixelRatio(ratio);
|
|
image.fill(Qt::transparent);
|
|
|
|
// Shape (shadow source) is always at (blurRadius, blurRadius).
|
|
const auto shape = QRectF(
|
|
_blurRadius,
|
|
_blurRadius,
|
|
bodyW,
|
|
bodyH);
|
|
// Body cutout is shifted by -offset relative to the shape.
|
|
const auto cutout = QRectF(
|
|
ext.left(),
|
|
ext.top(),
|
|
bodyW,
|
|
bodyH);
|
|
|
|
const auto drawRounded = [&](QPainter &p, QRectF rect) {
|
|
if (cornerRadius > 0) {
|
|
p.drawRoundedRect(rect, cornerRadius, cornerRadius);
|
|
} else {
|
|
p.drawRect(rect);
|
|
}
|
|
};
|
|
|
|
{
|
|
auto p = QPainter(&image);
|
|
auto hq = PainterHighQualityEnabler(p);
|
|
p.setPen(Qt::NoPen);
|
|
p.setBrush(Qt::white);
|
|
drawRounded(p, shape);
|
|
}
|
|
|
|
image = Images::BlurLargeImage(
|
|
std::move(image),
|
|
_blurRadius * ratio);
|
|
|
|
// Convert blurred RGB mask to black shadow with alpha.
|
|
for (auto y = 0; y < image.height(); ++y) {
|
|
auto row = reinterpret_cast<uint32*>(image.scanLine(y));
|
|
for (auto x = 0; x < image.width(); ++x) {
|
|
const auto mask = row[x] & 0xFFU;
|
|
row[x] = mask << 24;
|
|
}
|
|
}
|
|
|
|
// Cut out the body area so the shadow is only the outer glow.
|
|
{
|
|
auto p = QPainter(&image);
|
|
auto hq = PainterHighQualityEnabler(p);
|
|
p.setCompositionMode(QPainter::CompositionMode_DestinationOut);
|
|
p.setPen(Qt::NoPen);
|
|
p.setBrush(Qt::white);
|
|
drawRounded(p, cutout);
|
|
}
|
|
|
|
_cache = std::move(image);
|
|
}
|
|
|
|
void BoxShadow::paint(
|
|
QPainter &p,
|
|
const QRect &box,
|
|
int cornerRadius) const {
|
|
paint(p, box, cornerRadius, _opacity);
|
|
}
|
|
|
|
void BoxShadow::paint(
|
|
QPainter &p,
|
|
const QRect &box,
|
|
int cornerRadius,
|
|
float64 opacity) const {
|
|
prepare(cornerRadius);
|
|
if (_cache.isNull()) {
|
|
return;
|
|
}
|
|
|
|
const auto ratio = style::DevicePixelRatio();
|
|
const auto clL = _cornerL;
|
|
const auto clT = _cornerT;
|
|
const auto clR = _cornerR;
|
|
const auto clB = _cornerB;
|
|
const auto clLPx = clL * ratio;
|
|
const auto clTPx = clT * ratio;
|
|
const auto clRPx = clR * ratio;
|
|
const auto clBPx = clB * ratio;
|
|
const auto middlePx = _middle * ratio;
|
|
|
|
const auto wasOpacity = p.opacity();
|
|
if (opacity < 1.) {
|
|
p.setOpacity(wasOpacity * opacity);
|
|
}
|
|
|
|
const auto ext = extend();
|
|
const auto outer = box.marginsAdded(ext);
|
|
const auto cw = std::max(outer.width() - clL - clR, 0);
|
|
const auto ch = std::max(outer.height() - clT - clB, 0);
|
|
|
|
const auto fill = [&](QRect dst, QRect src) {
|
|
if (dst.width() > 0 && dst.height() > 0) {
|
|
p.drawImage(dst, _cache, src);
|
|
}
|
|
};
|
|
|
|
// Source positions in physical pixels.
|
|
const auto srcR = clLPx + middlePx;
|
|
const auto srcB = clTPx + middlePx;
|
|
|
|
// Corners.
|
|
fill(
|
|
{ outer.x(), outer.y(), clL, clT },
|
|
{ 0, 0, clLPx, clTPx });
|
|
fill(
|
|
{ outer.x() + clL + cw, outer.y(), clR, clT },
|
|
{ srcR, 0, clRPx, clTPx });
|
|
fill(
|
|
{ outer.x(), outer.y() + clT + ch, clL, clB },
|
|
{ 0, srcB, clLPx, clBPx });
|
|
fill(
|
|
{ outer.x() + clL + cw, outer.y() + clT + ch, clR, clB },
|
|
{ srcR, srcB, clRPx, clBPx });
|
|
|
|
// Sides (stretched from the uniform middle strip).
|
|
fill(
|
|
{ outer.x() + clL, outer.y(), cw, clT },
|
|
{ clLPx, 0, middlePx, clTPx });
|
|
fill(
|
|
{ outer.x() + clL, outer.y() + clT + ch, cw, clB },
|
|
{ clLPx, srcB, middlePx, clBPx });
|
|
fill(
|
|
{ outer.x(), outer.y() + clT, clL, ch },
|
|
{ 0, clTPx, clLPx, middlePx });
|
|
fill(
|
|
{ outer.x() + clL + cw, outer.y() + clT, clR, ch },
|
|
{ srcR, clTPx, clRPx, middlePx });
|
|
|
|
if (opacity < 1.) {
|
|
p.setOpacity(wasOpacity);
|
|
}
|
|
}
|
|
|
|
} // namespace Ui
|