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      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 // must include config.h first for webkit to fiddle with new/delete
     27 #include "config.h"
     28 #include "SkANP.h"
     29 
     30 static ANPCanvas* anp_newCanvas(const ANPBitmap* bitmap) {
     31     SkBitmap bm;
     32     return new ANPCanvas(*SkANP::SetBitmap(&bm, *bitmap));
     33 }
     34 
     35 static void anp_deleteCanvas(ANPCanvas* canvas) {
     36     delete canvas;
     37 }
     38 
     39 static void anp_save(ANPCanvas* canvas) {
     40     canvas->skcanvas->save();
     41 }
     42 
     43 static void anp_restore(ANPCanvas* canvas) {
     44     canvas->skcanvas->restore();
     45 }
     46 
     47 static void anp_translate(ANPCanvas* canvas, float tx, float ty) {
     48     canvas->skcanvas->translate(SkFloatToScalar(tx), SkFloatToScalar(ty));
     49 }
     50 
     51 static void anp_scale(ANPCanvas* canvas, float sx, float sy) {
     52     canvas->skcanvas->scale(SkFloatToScalar(sx), SkFloatToScalar(sy));
     53 }
     54 
     55 static void anp_rotate(ANPCanvas* canvas, float degrees) {
     56     canvas->skcanvas->rotate(SkFloatToScalar(degrees));
     57 }
     58 
     59 static void anp_skew(ANPCanvas* canvas, float kx, float ky) {
     60     canvas->skcanvas->skew(SkFloatToScalar(kx), SkFloatToScalar(ky));
     61 }
     62 
     63 static void anp_clipRect(ANPCanvas* canvas, const ANPRectF* rect) {
     64     SkRect r;
     65     canvas->skcanvas->clipRect(*SkANP::SetRect(&r, *rect));
     66 }
     67 
     68 static void anp_clipPath(ANPCanvas* canvas, const ANPPath* path) {
     69     canvas->skcanvas->clipPath(*path);
     70 }
     71 static void anp_concat(ANPCanvas* canvas, const ANPMatrix* matrix) {
     72     canvas->skcanvas->concat(*matrix);
     73 }
     74 
     75 static void anp_getTotalMatrix(ANPCanvas* canvas, ANPMatrix* matrix) {
     76     const SkMatrix& src = canvas->skcanvas->getTotalMatrix();
     77     *matrix = *reinterpret_cast<const ANPMatrix*>(&src);
     78 }
     79 
     80 static bool anp_getLocalClipBounds(ANPCanvas* canvas, ANPRectF* r,
     81                                    bool antialias) {
     82     SkRect bounds;
     83     if (canvas->skcanvas->getClipBounds(&bounds,
     84                 antialias ? SkCanvas::kAA_EdgeType : SkCanvas::kBW_EdgeType)) {
     85         SkANP::SetRect(r, bounds);
     86         return true;
     87     }
     88     return false;
     89 }
     90 
     91 static bool anp_getDeviceClipBounds(ANPCanvas* canvas, ANPRectI* r) {
     92     const SkRegion& clip = canvas->skcanvas->getTotalClip();
     93     if (!clip.isEmpty()) {
     94         SkANP::SetRect(r, clip.getBounds());
     95         return true;
     96     }
     97     return false;
     98 }
     99 
    100 static void anp_drawColor(ANPCanvas* canvas, ANPColor color) {
    101     canvas->skcanvas->drawColor(color);
    102 }
    103 
    104 static void anp_drawPaint(ANPCanvas* canvas, const ANPPaint* paint) {
    105     canvas->skcanvas->drawPaint(*paint);
    106 }
    107 
    108 static void anp_drawLine(ANPCanvas* canvas, float x0, float y0,
    109                          float x1, float y1, const ANPPaint* paint) {
    110     canvas->skcanvas->drawLine(SkFloatToScalar(x0), SkFloatToScalar(y0),
    111                            SkFloatToScalar(x1), SkFloatToScalar(y1), *paint);
    112 }
    113 
    114 static void anp_drawRect(ANPCanvas* canvas, const ANPRectF* rect,
    115                          const ANPPaint* paint) {
    116     SkRect  r;
    117     canvas->skcanvas->drawRect(*SkANP::SetRect(&r, *rect), *paint);
    118 }
    119 
    120 static void anp_drawOval(ANPCanvas* canvas, const ANPRectF* rect,
    121                          const ANPPaint* paint) {
    122     SkRect  r;
    123     canvas->skcanvas->drawOval(*SkANP::SetRect(&r, *rect), *paint);
    124 }
    125 
    126 static void anp_drawPath(ANPCanvas* canvas, const ANPPath* path,
    127                          const ANPPaint* paint) {
    128     canvas->skcanvas->drawPath(*path, *paint);
    129 }
    130 
    131 static void anp_drawText(ANPCanvas* canvas, const void* text, uint32_t length,
    132                          float x, float y, const ANPPaint* paint) {
    133     canvas->skcanvas->drawText(text, length,
    134                                SkFloatToScalar(x), SkFloatToScalar(y),
    135                                *paint);
    136 }
    137 
    138 static void anp_drawPosText(ANPCanvas* canvas, const void* text,
    139                 uint32_t byteLength, const float xy[], const ANPPaint* paint) {
    140     canvas->skcanvas->drawPosText(text, byteLength,
    141                                   reinterpret_cast<const SkPoint*>(xy), *paint);
    142 }
    143 
    144 static void anp_drawBitmap(ANPCanvas* canvas, const ANPBitmap* bitmap,
    145                            float x, float y, const ANPPaint* paint) {
    146     SkBitmap    bm;
    147     canvas->skcanvas->drawBitmap(*SkANP::SetBitmap(&bm, *bitmap),
    148                                  SkFloatToScalar(x), SkFloatToScalar(y),
    149                                  paint);
    150 }
    151 
    152 static void anp_drawBitmapRect(ANPCanvas* canvas, const ANPBitmap* bitmap,
    153                               const ANPRectI* src, const ANPRectF* dst,
    154                                const ANPPaint* paint) {
    155     SkBitmap    bm;
    156     SkRect      dstR;
    157     SkIRect     srcR, *srcPtr = NULL;
    158 
    159     if (src) {
    160         srcPtr = SkANP::SetRect(&srcR, *src);
    161     }
    162     canvas->skcanvas->drawBitmapRect(*SkANP::SetBitmap(&bm, *bitmap), srcPtr,
    163                            *SkANP::SetRect(&dstR, *dst), paint);
    164 }
    165 
    166 ///////////////////////////////////////////////////////////////////////////////
    167 
    168 #define ASSIGN(obj, name)   (obj)->name = anp_##name
    169 
    170 void ANPCanvasInterfaceV0_Init(ANPInterface* value) {
    171     ANPCanvasInterfaceV0* i = reinterpret_cast<ANPCanvasInterfaceV0*>(value);
    172 
    173     ASSIGN(i, newCanvas);
    174     ASSIGN(i, deleteCanvas);
    175     ASSIGN(i, save);
    176     ASSIGN(i, restore);
    177     ASSIGN(i, translate);
    178     ASSIGN(i, scale);
    179     ASSIGN(i, rotate);
    180     ASSIGN(i, skew);
    181     ASSIGN(i, clipRect);
    182     ASSIGN(i, clipPath);
    183     ASSIGN(i, concat);
    184     ASSIGN(i, getTotalMatrix);
    185     ASSIGN(i, getLocalClipBounds);
    186     ASSIGN(i, getDeviceClipBounds);
    187     ASSIGN(i, drawColor);
    188     ASSIGN(i, drawPaint);
    189     ASSIGN(i, drawLine);
    190     ASSIGN(i, drawRect);
    191     ASSIGN(i, drawOval);
    192     ASSIGN(i, drawPath);
    193     ASSIGN(i, drawText);
    194     ASSIGN(i, drawPosText);
    195     ASSIGN(i, drawBitmap);
    196     ASSIGN(i, drawBitmapRect);
    197 }
    198