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      1 /*
      2  * Copyright 2006, 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 #include "config.h"
     27 #include "Node.h"
     28 #include "PlatformGraphicsContext.h"
     29 #include "SkCanvas.h"
     30 
     31 namespace WebCore {
     32 
     33 PlatformGraphicsContext::PlatformGraphicsContext(SkCanvas* canvas, WTF::Vector<Container>* buttons)
     34         : mCanvas(canvas), m_deleteCanvas(false), m_buttons(buttons)
     35 {
     36 }
     37 
     38 PlatformGraphicsContext::PlatformGraphicsContext()
     39         : mCanvas(new SkCanvas), m_deleteCanvas(true), m_buttons(0)
     40 {
     41 }
     42 
     43 PlatformGraphicsContext::~PlatformGraphicsContext()
     44 {
     45     if (m_deleteCanvas) {
     46 //        printf("-------------------- deleting offscreen canvas\n");
     47         delete mCanvas;
     48     }
     49 }
     50 
     51 void PlatformGraphicsContext::storeButtonInfo(Node* node, const IntRect& r)
     52 {
     53     if (m_buttons == NULL)
     54         return;
     55     // Check to see if we already have a Container for this node.  If so, update
     56     // it with the new rectangle and make the new recording canvas reference
     57     // its picture.
     58     Container* end = m_buttons->end();
     59     for (Container* ptr = m_buttons->begin(); ptr != end; ptr++) {
     60         if (ptr->matches(node)) {
     61             mCanvas->drawPicture(*(ptr->picture()));
     62             ptr->setRect(r);
     63             return;
     64         }
     65     }
     66     // We did not have a Container representing this node, so create a new one.
     67     Container container(node, r);
     68     // Place a reference to our subpicture in the Picture.
     69     mCanvas->drawPicture(*(container.picture()));
     70     // Keep track of the information about the button.
     71     m_buttons->append(container);
     72 }
     73 
     74 }   // WebCore
     75