Moving GraphicsContext and dependencies from core to platform.

Source/core/platform/ScrollbarThemeGtkOrAura.cpp

-/*
- * Copyright (c) 2008, 2009, Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT{
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,{
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-#include "core/platform/ScrollbarThemeGtkOrAura.h"
-
-#include "RuntimeEnabledFeatures.h"
-#include "core/platform/ScrollbarThemeOverlay.h"
-#include "core/platform/graphics/GraphicsContext.h"
-#include "platform/LayoutTestSupport.h"
-#include "platform/PlatformMouseEvent.h"
-#include "platform/scroll/ScrollbarThemeClient.h"
-#include "public/platform/Platform.h"
-#include "public/platform/WebRect.h"
-#include "public/platform/default/WebThemeEngine.h"
-
-namespace WebCore {
-
-static bool useMockTheme()
-{
-    return isRunningLayoutTest();
-}
-
-ScrollbarTheme* ScrollbarTheme::nativeTheme()
-{
-    if (RuntimeEnabledFeatures::overlayScrollbarsEnabled()) {
-        DEFINE_STATIC_LOCAL(ScrollbarThemeOverlay, theme, (10, 0, ScrollbarThemeOverlay::AllowHitTest, Color(128, 128, 128, 192)));
-        return &theme;
-    }
-
-    DEFINE_STATIC_LOCAL(ScrollbarThemeGtkOrAura, theme, ());
-    return &theme;
-}
-
-int ScrollbarThemeGtkOrAura::scrollbarThickness(ScrollbarControlSize controlSize)
-{
-    // Horiz and Vert scrollbars are the same thickness.
-    IntSize scrollbarSize = blink::Platform::current()->themeEngine()->getSize(blink::WebThemeEngine::PartScrollbarVerticalTrack);
-    return scrollbarSize.width();
-}
-
-void ScrollbarThemeGtkOrAura::paintTrackPiece(GraphicsContext* gc, ScrollbarThemeClient* scrollbar, const IntRect& rect, ScrollbarPart partType)
-{
-    blink::WebThemeEngine::State state = scrollbar->hoveredPart() == partType ? blink::WebThemeEngine::StateHover : blink::WebThemeEngine::StateNormal;
-
-    if (useMockTheme() && !scrollbar->enabled())
-        state = blink::WebThemeEngine::StateDisabled;
-
-    IntRect alignRect = trackRect(scrollbar, false);
-    blink::WebThemeEngine::ExtraParams extraParams;
-    blink::WebCanvas* canvas = gc->canvas();
-    extraParams.scrollbarTrack.isBack = (partType == BackTrackPart);
-    extraParams.scrollbarTrack.trackX = alignRect.x();
-    extraParams.scrollbarTrack.trackY = alignRect.y();
-    extraParams.scrollbarTrack.trackWidth = alignRect.width();
-    extraParams.scrollbarTrack.trackHeight = alignRect.height();
-    blink::Platform::current()->themeEngine()->paint(canvas, scrollbar->orientation() == HorizontalScrollbar ? blink::WebThemeEngine::PartScrollbarHorizontalTrack : blink::WebThemeEngine::PartScrollbarVerticalTrack, state, blink::WebRect(rect), &extraParams);
-}
-
-void ScrollbarThemeGtkOrAura::paintButton(GraphicsContext* gc, ScrollbarThemeClient* scrollbar, const IntRect& rect, ScrollbarPart part)
-{
-    blink::WebThemeEngine::Part paintPart;
-    blink::WebThemeEngine::State state = blink::WebThemeEngine::StateNormal;
-    blink::WebCanvas* canvas = gc->canvas();
-    bool checkMin = false;
-    bool checkMax = false;
-
-    if (scrollbar->orientation() == HorizontalScrollbar) {
-        if (part == BackButtonStartPart) {
-            paintPart = blink::WebThemeEngine::PartScrollbarLeftArrow;
-            checkMin = true;
-        } else if (useMockTheme() && part != ForwardButtonEndPart) {
-            return;
-        } else {
-            paintPart = blink::WebThemeEngine::PartScrollbarRightArrow;
-            checkMax = true;
-        }
-    } else {
-        if (part == BackButtonStartPart) {
-            paintPart = blink::WebThemeEngine::PartScrollbarUpArrow;
-            checkMin = true;
-        } else if (useMockTheme() && part != ForwardButtonEndPart) {
-            return;
-        } else {
-            paintPart = blink::WebThemeEngine::PartScrollbarDownArrow;
-            checkMax = true;
-        }
-    }
-    if (useMockTheme() && !scrollbar->enabled()) {
-        state = blink::WebThemeEngine::StateDisabled;
-    } else if (!useMockTheme() && ((checkMin && (scrollbar->currentPos() <= 0))
-        || (checkMax && scrollbar->currentPos() == scrollbar->maximum()))) {
-        state = blink::WebThemeEngine::StateDisabled;
-    } else {
-        if (part == scrollbar->pressedPart())
-            state = blink::WebThemeEngine::StatePressed;
-        else if (part == scrollbar->hoveredPart())
-            state = blink::WebThemeEngine::StateHover;
-    }
-    blink::Platform::current()->themeEngine()->paint(canvas, paintPart, state, blink::WebRect(rect), 0);
-}
-
-void ScrollbarThemeGtkOrAura::paintThumb(GraphicsContext* gc, ScrollbarThemeClient* scrollbar, const IntRect& rect)
-{
-    blink::WebThemeEngine::State state;
-    blink::WebCanvas* canvas = gc->canvas();
-    if (scrollbar->pressedPart() == ThumbPart)
-        state = blink::WebThemeEngine::StatePressed;
-    else if (scrollbar->hoveredPart() == ThumbPart)
-        state = blink::WebThemeEngine::StateHover;
-    else
-        state = blink::WebThemeEngine::StateNormal;
-    blink::Platform::current()->themeEngine()->paint(canvas, scrollbar->orientation() == HorizontalScrollbar ? blink::WebThemeEngine::PartScrollbarHorizontalThumb : blink::WebThemeEngine::PartScrollbarVerticalThumb, state, blink::WebRect(rect), 0);
-}
-
-bool ScrollbarThemeGtkOrAura::shouldCenterOnThumb(ScrollbarThemeClient*, const PlatformMouseEvent& evt)
-{
-    return (evt.shiftKey() && evt.button() == LeftButton) || (evt.button() == MiddleButton);
-}
-
-IntSize ScrollbarThemeGtkOrAura::buttonSize(ScrollbarThemeClient* scrollbar)
-{
-    if (scrollbar->orientation() == VerticalScrollbar) {
-        IntSize size = blink::Platform::current()->themeEngine()->getSize(blink::WebThemeEngine::PartScrollbarUpArrow);
-        return IntSize(size.width(), scrollbar->height() < 2 * size.height() ? scrollbar->height() / 2 : size.height());
-    }
-
-    // HorizontalScrollbar
-    IntSize size = blink::Platform::current()->themeEngine()->getSize(blink::WebThemeEngine::PartScrollbarLeftArrow);
-    return IntSize(scrollbar->width() < 2 * size.width() ? scrollbar->width() / 2 : size.width(), size.height());
-}
-
-int ScrollbarThemeGtkOrAura::minimumThumbLength(ScrollbarThemeClient* scrollbar)
-{
-    if (scrollbar->orientation() == VerticalScrollbar) {
-        IntSize size = blink::Platform::current()->themeEngine()->getSize(blink::WebThemeEngine::PartScrollbarVerticalThumb);
-        return size.height();
-    }
-
-    IntSize size = blink::Platform::current()->themeEngine()->getSize(blink::WebThemeEngine::PartScrollbarHorizontalThumb);
-    return size.width();
-}
-
-} // namespace WebCore