1/*
2 * Copyright 2008, The Android Open Source Project
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *  * Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 *  * Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#define LOG_TAG "webcoreglue"
27
28#include <config.h>
29#include "WebFrameView.h"
30
31#include "android_graphics.h"
32#include "GraphicsContext.h"
33#include "Frame.h"
34#include "FrameTree.h"
35#include "FrameView.h"
36#include "HostWindow.h"
37#include "PlatformGraphicsContext.h"
38#include "WebViewCore.h"
39
40#include <SkCanvas.h>
41
42namespace android {
43
44WebFrameView::WebFrameView(WebCore::FrameView* frameView, WebViewCore* webViewCore)
45    : WebCoreViewBridge()
46    , mFrameView(frameView)
47    , mWebViewCore(webViewCore) {
48    // attach itself to mFrameView
49    mFrameView->setPlatformWidget(this);
50    Retain(mWebViewCore);
51}
52
53WebFrameView::~WebFrameView() {
54    Release(mWebViewCore);
55}
56
57void WebFrameView::draw(WebCore::GraphicsContext* ctx, const WebCore::IntRect& rect) {
58    WebCore::Frame* frame = mFrameView->frame();
59
60    if (NULL == frame->contentRenderer()) {
61        // We only do this if there is nothing else to draw.
62        // If there is a renderer, it will fill the bg itself, so we don't want to
63        // double-draw (slow)
64        SkCanvas* canvas = ctx->platformContext()->mCanvas;
65        canvas->drawColor(SK_ColorWHITE);
66    } else if (frame->tree()->parent()) {
67        // Note: this code was moved from FrameLoaderClientAndroid
68        //
69        // For subframe, create a new translated rect from the given rectangle.
70        WebCore::IntRect transRect(rect);
71        // In Frame::markAllMatchesForText(), it does a fake paint.  So we need
72        // to handle the case where platformContext() is null.  However, we still
73        // want to call paint, since WebKit must have called the paint for a reason.
74        SkCanvas* canvas = ctx->platformContext() ? ctx->platformContext()->mCanvas : NULL;
75        if (canvas) {
76            const WebCore::IntRect& bounds = getBounds();
77
78            // Grab the intersection of transRect and the frame's bounds.
79            transRect.intersect(bounds);
80            if (transRect.isEmpty())
81                return;
82
83            // Move the transRect into the frame's local coordinates.
84            transRect.move(-bounds.x(), -bounds.y());
85
86            // Translate the canvas, add a clip.
87            canvas->save();
88            canvas->translate(SkIntToScalar(bounds.x()), SkIntToScalar(bounds.y()));
89            canvas->clipRect(transRect);
90        }
91        mFrameView->paintContents(ctx, transRect);
92        if (canvas)
93            canvas->restore();
94    } else {
95        mFrameView->paintContents(ctx, rect);
96    }
97}
98
99void WebFrameView::setView(WebCore::FrameView* frameView) {
100    mFrameView = frameView;
101    mFrameView->setPlatformWidget(this);
102}
103
104}   // namespace android
105