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bug 755070 - Scrolling causes after paint notifications which causes screenshotting which causes checkerboarding r=kats,cjones

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This commit is contained in:
Brad Lassey
2012-06-14 09:08:51 -07:00
parent 50406e0097
commit c8cec3a911
16 changed files with 360 additions and 122 deletions
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23
widget/android/AndroidBridge.cpp
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@@ -88,7 +88,7 @@ AndroidBridge::Init(JNIEnv *jEnv,
jNotifyIME = (jmethodID) jEnv->GetStaticMethodID(jGeckoAppShellClass, "notifyIME", "(II)V");
jNotifyIMEEnabled = (jmethodID) jEnv->GetStaticMethodID(jGeckoAppShellClass, "notifyIMEEnabled", "(ILjava/lang/String;Ljava/lang/String;Z)V");
jNotifyIMEChange = (jmethodID) jEnv->GetStaticMethodID(jGeckoAppShellClass, "notifyIMEChange", "(Ljava/lang/String;III)V");
jNotifyScreenShot = (jmethodID) jEnv->GetStaticMethodID(jGeckoAppShellClass, "notifyScreenShot", "(Ljava/nio/ByteBuffer;IIIIII)V");
jNotifyScreenShot = (jmethodID) jEnv->GetStaticMethodID(jGeckoAppShellClass, "notifyScreenShot", "(Ljava/nio/ByteBuffer;IIIIIIII)V");
jAcknowledgeEventSync = (jmethodID) jEnv->GetStaticMethodID(jGeckoAppShellClass, "acknowledgeEventSync", "()V");
jEnableLocation = (jmethodID) jEnv->GetStaticMethodID(jGeckoAppShellClass, "enableLocation", "(Z)V");
@@ -2369,9 +2369,13 @@ jobject JNICALL
Java_org_mozilla_gecko_GeckoAppShell_allocateDirectBuffer(JNIEnv *env, jclass, jlong size);
nsresult AndroidBridge::TakeScreenshot(nsIDOMWindow *window, PRInt32 srcX, PRInt32 srcY, PRInt32 srcW, PRInt32 srcH, PRInt32 dstW, PRInt32 dstH, PRInt32 tabId, float scale, PRInt32 token)
nsresult AndroidBridge::TakeScreenshot(nsIDOMWindow *window, PRInt32 srcX, PRInt32 srcY, PRInt32 srcW, PRInt32 srcH, PRInt32 dstX, PRInt32 dstY, PRInt32 dstW, PRInt32 dstH, PRInt32 bufW, PRInt32 bufH, PRInt32 tabId, PRInt32 token, jobject buffer)
{
nsresult rv;
float scale = 1.0;
if (!buffer)
return NS_OK;
// take a screenshot, as wide as possible, proportional to the destination size
if (!srcW && !srcH) {
@@ -2432,21 +2436,18 @@ nsresult AndroidBridge::TakeScreenshot(nsIDOMWindow *window, PRInt32 srcX, PRInt
nsPresContext::CSSPixelsToAppUnits(srcW / scale),
nsPresContext::CSSPixelsToAppUnits(srcH / scale));
PRUint32 stride = dstW * 2;
PRUint32 bufferSize = dstH * stride;
jobject buffer = Java_org_mozilla_gecko_GeckoAppShell_allocateDirectBuffer(env, NULL, bufferSize);
if (!buffer)
return NS_OK;
PRUint32 stride = bufW * 2 /* 16 bpp */;
void* data = env->GetDirectBufferAddress(buffer);
memset(data, 0, bufferSize);
nsRefPtr<gfxImageSurface> surf = new gfxImageSurface(static_cast<unsigned char*>(data), nsIntSize(dstW, dstH), stride, gfxASurface::ImageFormatRGB16_565);
nsRefPtr<gfxImageSurface> surf = new gfxImageSurface(static_cast<unsigned char*>(data), nsIntSize(bufW, bufH), stride, gfxASurface::ImageFormatRGB16_565);
nsRefPtr<gfxContext> context = new gfxContext(surf);
gfxPoint pt(dstX, dstY);
context->Translate(pt);
context->Scale(scale * dstW / srcW, scale * dstH / srcH);
rv = presShell->RenderDocument(r, renderDocFlags, bgColor, context);
NS_ENSURE_SUCCESS(rv, rv);
env->CallStaticVoidMethod(AndroidBridge::Bridge()->mGeckoAppShellClass, AndroidBridge::Bridge()->jNotifyScreenShot, buffer, tabId, srcX * dstW / srcW , srcY * dstH / srcH, dstW, dstH, token);
env->CallStaticVoidMethod(AndroidBridge::Bridge()->mGeckoAppShellClass, AndroidBridge::Bridge()->jNotifyScreenShot,
buffer, tabId, dstX, dstY, dstX + dstW, dstY + dstH, bufW, bufH, token);
return NS_OK;
}