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Improve DPI support. 

Signed-off-by: Yuhang Zhao <2546789017@qq.com>
This commit is contained in:
Yuhang Zhao 2020-04-02 15:08:03 +08:00
parent b3e835a284
commit 927e949c7f
1 changed files with 42 additions and 10 deletions
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52
winnativeeventfilter.cpp
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@ -1,5 +1,6 @@
#include "winnativeeventfilter.h"
#include <QtMath>
#include <QDebug>
#include <QGuiApplication>
#include <QLibrary>
@ -312,10 +313,19 @@ bool WinNativeEventFilter::nativeEventFilter(const QByteArray &eventType,
case WM_NCHITTEST: {
const auto getHTResult = [this](HWND _hWnd, LPARAM _lParam,
LPWINDOW _data) -> LRESULT {
const auto isInSpecificAreas = [](int x, int y,
const auto isInSpecificAreas = [this, _hWnd](int x, int y,
const QVector<QRect> &areas) -> bool {
const qreal dpr = windowDpr(_hWnd);
for (auto &&area : qAsConst(areas)) {
if (area.contains(x, y, true)) {
if (!area.isValid()) {
continue;
}
QRect area_dpi = area;
area_dpi.setX(area_dpi.x() * dpr);
area_dpi.setY(area_dpi.y() * dpr);
area_dpi.setWidth(area_dpi.width() * dpr);
area_dpi.setHeight(area_dpi.height() * dpr);
if (area_dpi.contains(x, y, true)) {
return true;
}
}
@ -334,13 +344,13 @@ bool WinNativeEventFilter::nativeEventFilter(const QByteArray &eventType,
const int titlebarHeight_userDefined =
_data->windowData.titlebarHeight;
// These values should be DPI-aware.
const LONG bw = borderWidth_userDefined > 0 ? qRound64(windowDpr(_hWnd) * borderWidth_userDefined)
const LONG bw = borderWidth_userDefined > 0 ? windowDpr(_hWnd) * borderWidth_userDefined
: borderWidth(_hWnd);
const LONG bh = borderHeight_userDefined > 0
? qRound64(windowDpr(_hWnd) * borderHeight_userDefined)
? windowDpr(_hWnd) * borderHeight_userDefined
: borderHeight(_hWnd);
const LONG tbh = titlebarHeight_userDefined > 0
? qRound64(windowDpr(_hWnd) * titlebarHeight_userDefined)
? windowDpr(_hWnd) * titlebarHeight_userDefined
: titlebarHeight(_hWnd);
const bool isInsideWindow = (mouse.x > 0) && (mouse.x < ww) && (mouse.y > 0) && (mouse.y < wh);
const bool isTitlebar = isInsideWindow && (mouse.y < tbh) &&
@ -407,8 +417,8 @@ bool WinNativeEventFilter::nativeEventFilter(const QByteArray &eventType,
mmi.ptMaxTrackSize.x = mmi.ptMaxSize.x;
mmi.ptMaxTrackSize.y = mmi.ptMaxSize.y;
if (!data->windowData.minimumSize.isEmpty()) {
mmi.ptMinTrackSize.x = qRound64(windowDpr(msg->hwnd) * data->windowData.minimumSize.width());
mmi.ptMinTrackSize.y = qRound64(windowDpr(msg->hwnd) * data->windowData.minimumSize.height());
mmi.ptMinTrackSize.x = windowDpr(msg->hwnd) * data->windowData.minimumSize.width();
mmi.ptMinTrackSize.y = windowDpr(msg->hwnd) * data->windowData.minimumSize.height();
}
*result = 0;
return true;
@ -626,8 +636,30 @@ UINT WinNativeEventFilter::getDpiForWindow(HWND handle) const {
}
qreal WinNativeEventFilter::getDprForWindow(HWND handle) const {
return handle ? (qreal(getDpiForWindow(handle)) / qreal(m_defaultDPI))
: m_defaultDPR;
qreal dpr = handle ? (qreal(getDpiForWindow(handle)) / qreal(m_defaultDPI))
: m_defaultDPR;
#if (QT_VERSION >= QT_VERSION_CHECK(5, 14, 0))
switch (QGuiApplication::highDpiScaleFactorRoundingPolicy()) {
case Qt::HighDpiScaleFactorRoundingPolicy::PassThrough:
// Default for Qt 6.
break;
case Qt::HighDpiScaleFactorRoundingPolicy::Round:
dpr = qRound(dpr);
break;
case Qt::HighDpiScaleFactorRoundingPolicy::Floor:
dpr = qFloor(dpr);
break;
case Qt::HighDpiScaleFactorRoundingPolicy::Ceil:
dpr = qCeil(dpr);
break;
default:
break;
}
#else
// Default behavior from Qt 5.6 to 5.15
dpr = qRound(dpr);
#endif
return dpr;
}
int WinNativeEventFilter::getSystemMetricsForWindow(HWND handle,
@ -635,7 +667,7 @@ int WinNativeEventFilter::getSystemMetricsForWindow(HWND handle,
if (m_GetSystemMetricsForDpi) {
return m_GetSystemMetricsForDpi(index, getDpiForWindow(handle));
} else {
return qRound(GetSystemMetrics(index) * getDprForWindow(handle));
return GetSystemMetrics(index) * getDprForWindow(handle);
}
}