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[7.7.x] RHPAM-1216 Stunner - Disable/Enable HiDPI on Stunner / Lienzo #46

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merged 1 commit into from Jun 18, 2018
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[7.7.x] RHPAM-1216 Stunner - Disable/Enable HiDPI on Stunner / Lienzo #46

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3 changes: 2 additions & 1 deletion src/main/java/com/ait/lienzo/client/core/Context2D.java
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Expand Up @@ -16,6 +16,7 @@

package com.ait.lienzo.client.core;

import com.ait.lienzo.client.core.config.LienzoCore;
import com.ait.lienzo.client.core.types.DashArray;
import com.ait.lienzo.client.core.types.ImageData;
import com.ait.lienzo.client.core.types.ImageDataPixelColor;
Expand Down Expand Up @@ -46,7 +47,7 @@ public class Context2D

public Context2D(final CanvasElement element)
{
this(NativeContext2D.make(element));
this(NativeContext2D.make(element, LienzoCore.get().isHidpiEnabled()));
}

public Context2D(final INativeContext2D jso)
Expand Down
30 changes: 21 additions & 9 deletions src/main/java/com/ait/lienzo/client/core/NativeContext2D.java
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Expand Up @@ -42,9 +42,9 @@ private static final native NativeContext2D make_0(CanvasElement element)
return element.getContext("2d");
}-*/;

public static final NativeContext2D make(final CanvasElement element)
public static final NativeContext2D make(final CanvasElement element, final boolean enableHidpi)
{
return make_0(element).init();
return make_0(element).init(enableHidpi);
}

protected NativeContext2D()
Expand All @@ -53,6 +53,10 @@ protected NativeContext2D()

public final native void initDeviceRatio()
/*-{
if(!this.hidpiEnabled){
return;
}

var canvas = this.canvas;

var devicePixelRatio = window.devicePixelRatio || 1
Expand All @@ -76,16 +80,19 @@ public final native void initDeviceRatio()

}-*/;

private final native NativeContext2D init()
private final native NativeContext2D init(boolean enableHidpi)
/*-{
this.imageSmoothingEnabled = false;
this.imageSmoothingEnabled = false;
this.scalingRatio = 1;

this.backingStorePixelRatio = this.backingStorePixelRatio
|| this.webkitBackingStorePixelRatio
|| this.mozBackingStorePixelRatio
|| this.msBackingStorePixelRatio
|| this.oBackingStorePixelRatio || 1;
this.hidpiEnabled = enableHidpi;
if(enableHidpi) {
this.backingStorePixelRatio = this.backingStorePixelRatio
|| this.webkitBackingStorePixelRatio
|| this.mozBackingStorePixelRatio
|| this.msBackingStorePixelRatio
|| this.oBackingStorePixelRatio || 1;
}

if (this.setLineDash) {
this.setLineDashOffset = function(d) {
Expand Down Expand Up @@ -124,6 +131,11 @@ private final native NativeContext2D init()
return this;
}-*/;

public final native boolean isHidpiEnabled()
/*-{
return this.hidpiEnabled;
}-*/;

public final void saveContainer(String id) {
this.save();
}
Expand Down
10 changes: 10 additions & 0 deletions src/main/java/com/ait/lienzo/client/core/config/LienzoCore.java
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Expand Up @@ -85,6 +85,8 @@ public final class LienzoCore

private boolean m_nativeLineDashExamine = false;

private boolean m_hidpiEnabled = false;

private Cursor m_normal_cursor = Cursor.DEFAULT;

private Cursor m_select_cursor = Cursor.CROSSHAIR;
Expand Down Expand Up @@ -517,6 +519,14 @@ public final double getDeviceScale()
return (m_deviceScale = getDevicePixelRatio() / getBackingStorePixelRatio());
}

public boolean isHidpiEnabled() {
return m_hidpiEnabled;
}

public boolean setHidpiEnabled(boolean hidpiEnabled) {
return m_hidpiEnabled;
}

private final boolean examineNativeLineDashSupported()
{
if (IS_CANVAS_SUPPORTED)
Expand Down