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/*
* Copyright (c) 2012, 2017, Oracle and/or its affiliates. All rights reserved.
*/
#include "config.h"
#include "Chrome.h"
#include "ChromeClientJava.h"
#include "Frame.h"
#include "FrameView.h"
#include "GraphicsContext.h"
#include "HostWindow.h"
#include "Page.h"
#include "PlatformContextJava.h"
#include "Scrollbar.h"
#include "ScrollbarThemeJava.h"
#include "ScrollView.h"
#include "NotImplemented.h"
#include <wtf/java/JavaEnv.h>
#include "com_sun_webkit_graphics_ScrollBarTheme.h"
#include "com_sun_webkit_graphics_GraphicsDecoder.h"
namespace WebCore {
ScrollbarTheme& ScrollbarTheme::nativeTheme()
{
static ScrollbarTheme *s_sharedInstance = new ScrollbarThemeJava();
return *s_sharedInstance;
}
jclass getJScrollBarThemeClass()
{
static JGClass jScrollbarThemeClass(
WebCore_GetJavaEnv()->FindClass("com/sun/webkit/graphics/ScrollBarTheme"));
ASSERT(jScrollbarThemeClass);
return jScrollbarThemeClass;
}
JLObject getJScrollBarTheme(Scrollbar& sb)
{
FrameView* fv = sb.root();
if (!fv) {
// the scrollbar has been detached
return 0;
}
Page* page = fv->frame().page();
JLObject jWebPage = ((ChromeClientJava*)&page->chrome().client())->platformPage();
JNIEnv* env = WebCore_GetJavaEnv();
static jmethodID mid = env->GetMethodID(
PG_GetWebPageClass(env),
"getScrollBarTheme",
"()Lcom/sun/webkit/graphics/ScrollBarTheme;");
ASSERT(mid);
JLObject jScrollbarTheme = env->CallObjectMethod(jWebPage, mid);
ASSERT(jScrollbarTheme);
CheckAndClearException(env);
return jScrollbarTheme;
}
IntRect getPartRect(Scrollbar& scrollbar, ScrollbarPart part) {
JLObject jtheme = getJScrollBarTheme(scrollbar);
if (!jtheme) {
return IntRect();
}
JNIEnv* env = WebCore_GetJavaEnv();
static jmethodID midGetPartRect = env->GetMethodID(
getJScrollBarThemeClass(),
"getScrollBarPartRect",
"(JI[I)V");
ASSERT(midGetPartRect);
JLocalRef<jintArray> jrect(env->NewIntArray(4));
CheckAndClearException(env); // OOME
ASSERT(jrect);
env->CallVoidMethod(jtheme,
midGetPartRect,
ptr_to_jlong(&scrollbar),
(jint)part,
(jintArray)jrect);
CheckAndClearException(env);
jint *r = (jint*)env->GetPrimitiveArrayCritical(jrect, 0);
IntRect rect(r[0], r[1], r[2], r[3]);
env->ReleasePrimitiveArrayCritical(jrect, r, 0);
if (rect.isEmpty()) {
return rect;
}
// Bounding box should be absolute location, so adjust according to
// the position of scrollbar.
rect.move(scrollbar.x(), scrollbar.y());
return rect;
}
bool ScrollbarThemeJava::paint(Scrollbar& scrollbar, GraphicsContext& gc, const IntRect&)
{
// platformContext() returns 0 when printing
if (gc.paintingDisabled() || !gc.platformContext()) {
return true;
}
JLObject jtheme = getJScrollBarTheme(scrollbar);
if (!jtheme) {
return false;
}
JNIEnv* env = WebCore_GetJavaEnv();
static jmethodID mid = env->GetMethodID(
getJScrollBarThemeClass(),
"createWidget",
"(JIIIIII)Lcom/sun/webkit/graphics/Ref;");
ASSERT(mid);
RefPtr<RQRef> widgetRef = RQRef::create( env->CallObjectMethod(
jtheme,
mid,
ptr_to_jlong(&scrollbar),
(jint)scrollbar.width(),
(jint)scrollbar.height(),
(jint)scrollbar.orientation(),
(jint)scrollbar.value(),
(jint)scrollbar.visibleSize(),
(jint)scrollbar.totalSize()));
ASSERT(widgetRef.get());
CheckAndClearException(env);
// widgetRef will go into rq's inner refs vector.
gc.platformContext()->rq().freeSpace(28)
<< (jint)com_sun_webkit_graphics_GraphicsDecoder_DRAWSCROLLBAR
<< RQRef::create(jtheme)
<< widgetRef
<< (jint)scrollbar.x()
<< (jint)scrollbar.y()
<< (jint)scrollbar.pressedPart()
<< (jint)scrollbar.hoveredPart();
return false;
}
void ScrollbarThemeJava::invalidatePart(Scrollbar& scrollbar, ScrollbarPart)
{
// FIXME: Do more precise invalidation.
scrollbar.invalidate();
}
bool ScrollbarThemeJava::hasThumb(Scrollbar& scrollbar)
{
return thumbLength(scrollbar) > 0;
}
IntRect ScrollbarThemeJava::backButtonRect(Scrollbar& scrollbar, ScrollbarPart part, bool) {
return getPartRect(scrollbar, part);
}
IntRect ScrollbarThemeJava::forwardButtonRect(Scrollbar& scrollbar, ScrollbarPart part, bool) {
return getPartRect(scrollbar, part);
}
IntRect ScrollbarThemeJava::trackRect(Scrollbar& scrollbar, bool) {
return getPartRect(scrollbar, TrackBGPart);
}
int ScrollbarThemeJava::scrollbarThickness(ScrollbarControlSize)
{
JNIEnv* env = WebCore_GetJavaEnv();
static jmethodID mid = env->GetStaticMethodID(
getJScrollBarThemeClass(),
"getThickness",
"()I");
ASSERT(mid);
int thickness = env->CallStaticIntMethod(
getJScrollBarThemeClass(),
mid);
CheckAndClearException(env);
return thickness;
}
} //namespace WebCore
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