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[win32] Apply coordinate system change with guards
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This commit reapplies the essence of the reverted commits from 4f60cb6 and 7a04f7a with proper guards to differentiate between the scenario with rescaling active and inactive.

contributes to #62 and #127
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@akoch-yatta @fedejeanne
akoch-yatta authored and fedejeanne committed Nov 13, 2024
1 parent 9771e17 commit 0e7f799
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Showing 3 changed files with 234 additions and 12 deletions.
17 changes: 11 additions & 6 deletions bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Control.java
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Original file line number Diff line number Diff line change
Expand Up @@ -3970,6 +3970,11 @@ void subclass () {
public Point toControl (int x, int y) {
checkWidget ();
int zoom = getZoom();
if (getDisplay().isRescalingAtRuntime()) {
Point displayPointInPixels = getDisplay().translateLocationInPixelsInDisplayCoordinateSystem(x, y);
final Point controlPointInPixels = toControlInPixels(displayPointInPixels.x, displayPointInPixels.y);
return DPIUtil.scaleDown(controlPointInPixels, zoom);
}
return DPIUtil.scaleDown(toControlInPixels(DPIUtil.scaleUp(x, zoom), DPIUtil.scaleUp(y, zoom)), zoom);
}

Expand Down Expand Up @@ -4003,9 +4008,7 @@ Point toControlInPixels (int x, int y) {
public Point toControl (Point point) {
checkWidget ();
if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
int zoom = getZoom();
point = DPIUtil.scaleUp(point, zoom);
return DPIUtil.scaleDown(toControlInPixels(point.x, point.y), zoom);
return toControl(point.x, point.y);
}

/**
Expand All @@ -4031,6 +4034,10 @@ public Point toControl (Point point) {
public Point toDisplay (int x, int y) {
checkWidget ();
int zoom = getZoom();
if (getDisplay().isRescalingAtRuntime()) {
Point displayPointInPixels = toDisplayInPixels(DPIUtil.scaleUp(x, zoom), DPIUtil.scaleUp(y, zoom));
return getDisplay().translateLocationInPointInDisplayCoordinateSystem(displayPointInPixels.x, displayPointInPixels.y);
}
return DPIUtil.scaleDown(toDisplayInPixels(DPIUtil.scaleUp(x, zoom), DPIUtil.scaleUp(y, zoom)), zoom);
}

Expand Down Expand Up @@ -4064,9 +4071,7 @@ Point toDisplayInPixels (int x, int y) {
public Point toDisplay (Point point) {
checkWidget ();
if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
int zoom = getZoom();
point = DPIUtil.scaleUp(point, zoom);
return DPIUtil.scaleDown(toDisplayInPixels(point.x, point.y), zoom);
return toDisplay(point.x, point.y);
}

long topHandle () {
Expand Down
179 changes: 173 additions & 6 deletions bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Display.java
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Original file line number Diff line number Diff line change
Expand Up @@ -1704,7 +1704,11 @@ public Control getCursorControl () {
*/
public Point getCursorLocation () {
checkDevice ();
return DPIUtil.autoScaleDown(getCursorLocationInPixels());
Point cursorLocationInPixels = getCursorLocationInPixels();
if (isRescalingAtRuntime()) {
return translateLocationInPointInDisplayCoordinateSystem(cursorLocationInPixels.x, cursorLocationInPixels.y);
}
return DPIUtil.autoScaleDown(cursorLocationInPixels);
}

Point getCursorLocationInPixels () {
Expand Down Expand Up @@ -2183,14 +2187,21 @@ Monitor getMonitor (long hmonitor) {
OS.GetMonitorInfo (hmonitor, lpmi);
Monitor monitor = new Monitor ();
monitor.handle = hmonitor;
Rectangle boundsInPixels = new Rectangle (lpmi.rcMonitor_left, lpmi.rcMonitor_top, lpmi.rcMonitor_right - lpmi.rcMonitor_left,lpmi.rcMonitor_bottom - lpmi.rcMonitor_top);
monitor.setBounds (DPIUtil.autoScaleDown (boundsInPixels));
Rectangle clientAreaInPixels = new Rectangle (lpmi.rcWork_left, lpmi.rcWork_top, lpmi.rcWork_right - lpmi.rcWork_left, lpmi.rcWork_bottom - lpmi.rcWork_top);
monitor.setClientArea (DPIUtil.autoScaleDown (clientAreaInPixels));
Rectangle boundsInPixels = new Rectangle(lpmi.rcMonitor_left, lpmi.rcMonitor_top, lpmi.rcMonitor_right - lpmi.rcMonitor_left,lpmi.rcMonitor_bottom - lpmi.rcMonitor_top);
Rectangle clientAreaInPixels = new Rectangle(lpmi.rcWork_left, lpmi.rcWork_top, lpmi.rcWork_right - lpmi.rcWork_left, lpmi.rcWork_bottom - lpmi.rcWork_top);
int [] dpiX = new int[1];
int [] dpiY = new int[1];
int result = OS.GetDpiForMonitor (monitor.handle, OS.MDT_EFFECTIVE_DPI, dpiX, dpiY);
result = (result == OS.S_OK) ? DPIUtil.mapDPIToZoom (dpiX[0]) : 100;

if (DPIUtil.isAutoScaleOnRuntimeActive()) {
int autoscaleZoom = DPIUtil.getZoomForAutoscaleProperty(result);
monitor.setBounds(getMonitorBoundsInPointsInDisplayCoordinateSystem(boundsInPixels, autoscaleZoom));
monitor.setClientArea(getMonitorBoundsInPointsInDisplayCoordinateSystem(clientAreaInPixels, autoscaleZoom));
} else {
monitor.setBounds(DPIUtil.autoScaleDown(boundsInPixels));
monitor.setClientArea(DPIUtil.autoScaleDown(clientAreaInPixels));
}
if (result == 0) {
System.err.println("***WARNING: GetDpiForMonitor: SWT could not get valid monitor scaling factor.");
result = 100;
Expand All @@ -2203,6 +2214,13 @@ Monitor getMonitor (long hmonitor) {
return monitor;
}

private Rectangle getMonitorBoundsInPointsInDisplayCoordinateSystem(Rectangle boundsInPixels, int zoom) {
Rectangle bounds = DPIUtil.scaleDown(boundsInPixels, zoom);
bounds.x = boundsInPixels.x;
bounds.y = boundsInPixels.y;
return bounds;
}

/**
* Returns an array of monitors attached to the device.
*
Expand Down Expand Up @@ -2944,6 +2962,9 @@ boolean isValidThread () {
public Point map (Control from, Control to, Point point) {
checkDevice ();
if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
if (isRescalingAtRuntime()) {
return map(from, to, point.x, point.y);
}
int zoom = getZoomLevelForMapping(from, to);
point = DPIUtil.scaleUp(point, zoom);
return DPIUtil.scaleDown(mapInPixels(from, to, point), zoom);
Expand Down Expand Up @@ -2991,6 +3012,20 @@ Point mapInPixels (Control from, Control to, Point point) {
*/
public Point map (Control from, Control to, int x, int y) {
checkDevice ();
if (isRescalingAtRuntime()) {
Point mappedPointInPoints;
if (from == null) {
Point mappedPointInpixels = mapInPixels(from, to, getPixelsFromPoint(to.getShell().getMonitor(), x, y));
mappedPointInPoints = DPIUtil.scaleDown(mappedPointInpixels, to.getZoom());
} else if (to == null) {
Point mappedPointInpixels = mapInPixels(from, to, DPIUtil.scaleUp(new Point(x, y), from.getZoom()));
mappedPointInPoints = getPointFromPixels(from.getShell().getMonitor(), mappedPointInpixels.x, mappedPointInpixels.y);
} else {
Point mappedPointInpixels = mapInPixels(from, to, DPIUtil.scaleUp(new Point(x, y), from.getZoom()));
mappedPointInPoints = DPIUtil.scaleDown(mappedPointInpixels, to.getZoom());
}
return mappedPointInPoints;
}
int zoom = getZoomLevelForMapping(from, to);
x = DPIUtil.scaleUp(x, zoom);
y = DPIUtil.scaleUp(y, zoom);
Expand Down Expand Up @@ -3058,6 +3093,9 @@ private int getZoomLevelForMapping(Control from, Control to) {
public Rectangle map (Control from, Control to, Rectangle rectangle) {
checkDevice ();
if (rectangle == null) error (SWT.ERROR_NULL_ARGUMENT);
if (isRescalingAtRuntime()) {
return map(from, to, rectangle.x, rectangle.y, rectangle.width, rectangle.height);
}
int zoom = getZoomLevelForMapping(from, to);
rectangle = DPIUtil.scaleUp(rectangle, zoom);
return DPIUtil.scaleDown(mapInPixels(from, to, rectangle), zoom);
Expand Down Expand Up @@ -3107,6 +3145,20 @@ Rectangle mapInPixels (Control from, Control to, Rectangle rectangle) {
*/
public Rectangle map (Control from, Control to, int x, int y, int width, int height) {
checkDevice ();
if (isRescalingAtRuntime()) {
Rectangle mappedRectangleInPoints;
if (from == null) {
Rectangle mappedRectangleInPixels = mapInPixels(from, to, translateRectangleInPixelsInDisplayCoordinateSystem(x, y, width, height, to.getShell().getMonitor()));
mappedRectangleInPoints = DPIUtil.scaleDown(mappedRectangleInPixels, to.getZoom());
} else if (to == null) {
Rectangle mappedRectangleInPixels = mapInPixels(from, to, DPIUtil.scaleUp(new Rectangle(x, y, width, height), from.getZoom()));
mappedRectangleInPoints = translateRectangleInPointsInDisplayCoordinateSystem(mappedRectangleInPixels.x, mappedRectangleInPixels.y, mappedRectangleInPixels.width, mappedRectangleInPixels.height, from.getShell().getMonitor());
} else {
Rectangle mappedRectangleInPixels = mapInPixels(from, to, DPIUtil.scaleUp(new Rectangle(x, y, width, height), from.getZoom()));
mappedRectangleInPoints = DPIUtil.scaleDown(mappedRectangleInPixels, to.getZoom());
}
return mappedRectangleInPoints;
}
int zoom = getZoomLevelForMapping(from, to);
x = DPIUtil.scaleUp(x, zoom);
y = DPIUtil.scaleUp(y, zoom);
Expand All @@ -3130,6 +3182,57 @@ Rectangle mapInPixels (Control from, Control to, int x, int y, int width, int he
return new Rectangle (rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top);
}

Point translateLocationInPixelsInDisplayCoordinateSystem(int x, int y) {
Monitor monitor = getContainingMonitor(x, y);
return getPixelsFromPoint(monitor, x, y);
}

Point translateLocationInPointInDisplayCoordinateSystem(int x, int y) {
Monitor monitor = getContainingMonitorInPixelsCoordinate(x, y);
return getPointFromPixels(monitor, x, y);
}

Rectangle translateRectangleInPixelsInDisplayCoordinateSystemByContainment(int x, int y, int width, int height) {
Monitor monitorByLocation = getContainingMonitor(x, y);
Monitor monitorByContainment = getContainingMonitor(x, y, width, height);
return translateRectangleInPixelsInDisplayCoordinateSystem(x, y, width, height, monitorByLocation, monitorByContainment);
}

private Rectangle translateRectangleInPixelsInDisplayCoordinateSystem(int x, int y, int width, int height, Monitor monitor) {
return translateRectangleInPixelsInDisplayCoordinateSystem(x, y, width, height, monitor, monitor);
}

private Rectangle translateRectangleInPixelsInDisplayCoordinateSystem(int x, int y, int width, int height, Monitor monitorOfLocation, Monitor monitorOfArea) {
Point topLeft = getPixelsFromPoint(monitorOfLocation, x, y);
int zoom = getApplicableMonitorZoom(monitorOfArea);
int widthInPixels = DPIUtil.scaleUp(width, zoom);
int heightInPixels = DPIUtil.scaleUp(height, zoom);
return new Rectangle(topLeft.x, topLeft.y, widthInPixels, heightInPixels);
}

Rectangle translateRectangleInPointsInDisplayCoordinateSystemByContainment(int x, int y, int widthInPixels, int heightInPixels) {
Monitor monitorByLocation = getContainingMonitor(x, y);
Monitor monitorByContainment = getContainingMonitor(x, y, widthInPixels, heightInPixels);
return translateRectangleInPointsInDisplayCoordinateSystem(x, y, widthInPixels, heightInPixels, monitorByLocation, monitorByContainment);
}

private Rectangle translateRectangleInPointsInDisplayCoordinateSystem(int x, int y, int widthInPixels, int heightInPixels, Monitor monitor) {
return translateRectangleInPointsInDisplayCoordinateSystem(x, y, widthInPixels, heightInPixels, monitor, monitor);
}


private Rectangle translateRectangleInPointsInDisplayCoordinateSystem(int x, int y, int widthInPixels, int heightInPixels, Monitor monitorOfLocation, Monitor monitorOfArea) {
Point topLeft = getPointFromPixels(monitorOfLocation, x, y);
int zoom = getApplicableMonitorZoom(monitorOfArea);
int width = DPIUtil.scaleDown(widthInPixels, zoom);
int height = DPIUtil.scaleDown(heightInPixels, zoom);
return new Rectangle(topLeft.x, topLeft.y, width, height);
}

private int getApplicableMonitorZoom(Monitor monitor) {
return DPIUtil.getZoomForAutoscaleProperty(isRescalingAtRuntime() ? monitor.zoom : getDeviceZoom());
}

long messageProc (long hwnd, long msg, long wParam, long lParam) {
switch ((int)msg) {
case SWT_RUNASYNC: {
Expand Down Expand Up @@ -4355,7 +4458,12 @@ public void sendPostExternalEventDispatchEvent () {
*/
public void setCursorLocation (int x, int y) {
checkDevice ();
setCursorLocationInPixels (DPIUtil.autoScaleUp (x), DPIUtil.autoScaleUp (y));
if (isRescalingAtRuntime()) {
Point cursorLocationInPixels = translateLocationInPixelsInDisplayCoordinateSystem(x, y);
setCursorLocationInPixels (cursorLocationInPixels.x, cursorLocationInPixels.y);
} else {
setCursorLocationInPixels (DPIUtil.autoScaleUp (x), DPIUtil.autoScaleUp (y));
}
}

void setCursorLocationInPixels (int x, int y) {
Expand Down Expand Up @@ -5390,4 +5498,63 @@ private boolean setDPIAwareness(int desiredDpiAwareness) {
return true;
}

private Monitor getContainingMonitor(int x, int y) {
Monitor[] monitors = getMonitors();
for (Monitor currentMonitor : monitors) {
Rectangle clientArea = currentMonitor.getClientArea();
if (clientArea.contains(x, y)) {
return currentMonitor;
}
}
return getPrimaryMonitor();
}

private Monitor getContainingMonitor(int x, int y, int width, int height) {
Rectangle rectangle = new Rectangle(x, y, width, height);
Monitor[] monitors = getMonitors();
Monitor selectedMonitor = getPrimaryMonitor();
int highestArea = 0;
for (Monitor currentMonitor : monitors) {
Rectangle clientArea = currentMonitor.getClientArea();
Rectangle intersection = clientArea.intersection(rectangle);
int area = intersection.width * intersection.height;
if (area > highestArea) {
selectedMonitor = currentMonitor;
highestArea = area;
}
}
return selectedMonitor;
}

private Monitor getContainingMonitorInPixelsCoordinate(int xInPixels, int yInPixels) {
Monitor[] monitors = getMonitors();
for (Monitor current : monitors) {
Rectangle clientArea = getMonitorClientAreaInPixels(current);
if (clientArea.contains(xInPixels, yInPixels)) {
return current;
}
}
return getPrimaryMonitor();
}

private Rectangle getMonitorClientAreaInPixels(Monitor monitor) {
int zoom = getApplicableMonitorZoom(monitor);
int widthInPixels = DPIUtil.scaleUp(monitor.clientWidth, zoom);
int heightInPixels = DPIUtil.scaleUp(monitor.clientHeight, zoom);
return new Rectangle(monitor.clientX, monitor.clientY, widthInPixels, heightInPixels);
}

private Point getPixelsFromPoint(Monitor monitor, int x, int y) {
int zoom = getApplicableMonitorZoom(monitor);
int mappedX = DPIUtil.scaleUp(x - monitor.clientX, zoom) + monitor.clientX;
int mappedY = DPIUtil.scaleUp(y - monitor.clientY, zoom) + monitor.clientY;
return new Point(mappedX, mappedY);
}

private Point getPointFromPixels(Monitor monitor, int x, int y) {
int zoom = getApplicableMonitorZoom(monitor);
int mappedX = DPIUtil.scaleDown(x - monitor.clientX, zoom) + monitor.clientX;
int mappedY = DPIUtil.scaleDown(y - monitor.clientY, zoom) + monitor.clientY;
return new Point(mappedX, mappedY);
}
}
50 changes: 50 additions & 0 deletions bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Shell.java
View file
Original file line number Diff line number Diff line change
Expand Up @@ -1566,6 +1566,56 @@ public void setAlpha (int alpha) {
}
}

@Override
public Rectangle getBounds() {
if (getDisplay().isRescalingAtRuntime()) {
Rectangle boundsInPixels = getBoundsInPixels();
return display.translateRectangleInPointsInDisplayCoordinateSystemByContainment(boundsInPixels.x, boundsInPixels.y, boundsInPixels.width, boundsInPixels.height);
}
return super.getBounds();
}

@Override
public Point getLocation() {
if (getDisplay().isRescalingAtRuntime()) {
Point locationInPixels = getLocationInPixels();
return display.translateLocationInPointInDisplayCoordinateSystem(locationInPixels.x, locationInPixels.y);
}
return super.getLocation();
}

@Override
public void setLocation(Point location) {
if (location == null) error (SWT.ERROR_NULL_ARGUMENT);
setLocation(location.x, location.y);
}

@Override
public void setLocation(int x, int y) {
if (getDisplay().isRescalingAtRuntime()) {
Point location = display.translateLocationInPixelsInDisplayCoordinateSystem(x, y);
setLocationInPixels(location.x, location.y);
} else {
super.setLocation(x, y);
}
}

@Override
public void setBounds(Rectangle rect) {
if (rect == null) error (SWT.ERROR_NULL_ARGUMENT);
setBounds(rect.x, rect.y, rect.width, rect.height);
}

@Override
public void setBounds(int x, int y, int width, int height) {
if (getDisplay().isRescalingAtRuntime()) {
Rectangle boundsInPixels = display.translateRectangleInPixelsInDisplayCoordinateSystemByContainment(x, y, width, height);
setBoundsInPixels(boundsInPixels.x, boundsInPixels.y, boundsInPixels.width, boundsInPixels.height);
} else {
super.setBounds(x, y, width, height);
}
}

@Override
void setBoundsInPixels (int x, int y, int width, int height, int flags, boolean defer) {
if (fullScreen) setFullScreen (false);
Expand Down

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