src/examples/testGradientTransform.cpp

   1 #include "testCommon.h"
   2
   3 /************************************************************************/
   4 /* Drawing Commands                                                     */
   5 /************************************************************************/
   6 tvg::Shape* pShape = nullptr;
   7 tvg::Shape* pShape2 = nullptr;
   8 tvg::Shape* pShape3 = nullptr;
   9
  10 void tvgDrawCmds(tvg::Canvas* canvas)
  11 {
  12     if (!canvas) return;
  13
  14     //Shape1
  15     auto shape = tvg::Shape::gen();
  16
  17     /* Acquire shape pointer to access it again.
  18        instead, you should consider not to interrupt this pointer life-cycle. */
  19     pShape = shape.get();
  20
  21     shape->appendRect(-285, -300, 200, 200, 0, 0);
  22     shape->appendRect(-185, -200, 300, 300, 100, 100);
  23     shape->appendCircle(115, 100, 100, 100);
  24     shape->appendCircle(115, 200, 170, 100);
  25
  26     //LinearGradient
  27     auto fill = tvg::LinearGradient::gen();
  28     fill->linear(-285, -300, 285, 300);
  29
  30     //Gradient Color Stops
  31     tvg::Fill::ColorStop colorStops[3];
  32     colorStops[0] = {0, 255, 0, 0, 255};
  33     colorStops[1] = {0.5, 255, 255, 0, 255};
  34     colorStops[2] = {1, 255, 255, 255, 255};
  35
  36     fill->colorStops(colorStops, 3);
  37     shape->fill(move(fill));
  38     shape->translate(385, 400);
  39     if (canvas->push(move(shape)) != tvg::Result::Success) return;
  40
  41     //Shape2
  42     auto shape2 = tvg::Shape::gen();
  43     pShape2 = shape2.get();
  44     shape2->appendRect(-50, -50, 100, 100, 0, 0);
  45     shape2->translate(400, 400);
  46
  47     //LinearGradient
  48     auto fill2 = tvg::LinearGradient::gen();
  49     fill2->linear(-50, -50, 50, 50);
  50
  51     //Gradient Color Stops
  52     tvg::Fill::ColorStop colorStops2[2];
  53     colorStops2[0] = {0, 0, 0, 0, 255};
  54     colorStops2[1] = {1, 255, 255, 255, 255};
  55
  56     fill2->colorStops(colorStops2, 2);
  57     shape2->fill(move(fill2));
  58     if (canvas->push(move(shape2)) != tvg::Result::Success) return;
  59
  60     //Shape3
  61     auto shape3 = tvg::Shape::gen();
  62     pShape3 = shape3.get();
  63
  64     /* Look, how shape3's origin is different with shape2
  65        The center of the shape is the anchor point for transformation. */
  66     shape3->appendRect(100, 100, 150, 100, 20, 20);
  67
  68     //RadialGradient
  69     auto fill3 = tvg::RadialGradient::gen();
  70     fill3->radial(175, 150, 75);
  71
  72     //Gradient Color Stops
  73     tvg::Fill::ColorStop colorStops3[4];
  74     colorStops3[0] = {0, 0, 127, 0, 127};
  75     colorStops3[1] = {0.25, 0, 170, 170, 170};
  76     colorStops3[2] = {0.5, 200, 0, 200, 200};
  77     colorStops3[3] = {1, 255, 255, 255, 255};
  78
  79     fill3->colorStops(colorStops3, 4);
  80
  81     shape3->fill(move(fill3));
  82     shape3->translate(400, 400);
  83     if (canvas->push(move(shape3)) != tvg::Result::Success) return;
  84 }
  85
  86 void tvgUpdateCmds(tvg::Canvas* canvas, float progress)
  87 {
  88     if (!canvas) return;
  89
  90     /* Update shape directly.
  91        You can update only necessary properties of this shape,
  92        while retaining other properties. */
  93
  94     //Update Shape1
  95     pShape->scale(1 - 0.75 * progress);
  96     pShape->rotate(360 * progress);
  97
  98     //Update shape for drawing (this may work asynchronously)
  99     if (canvas->update(pShape) != tvg::Result::Success) return;
 100
 101     //Update Shape2
 102     pShape2->rotate(360 * progress);
 103     pShape2->translate(400 + progress * 300, 400);
 104     if (canvas->update(pShape2) != tvg::Result::Success) return;
 105
 106     //Update Shape3
 107     pShape3->rotate(-360 * progress);
 108     pShape3->scale(0.5 + progress);
 109     if (canvas->update(pShape3) != tvg::Result::Success) return;
 110 }
 111
 112
 113 /************************************************************************/
 114 /* Sw Engine Test Code                                                  */
 115 /************************************************************************/
 116
 117 static unique_ptr<tvg::SwCanvas> swCanvas;
 118
 119 void tvgSwTest(uint32_t* buffer)
 120 {
 121     //Create a Canvas
 122     swCanvas = tvg::SwCanvas::gen();
 123     swCanvas->target(buffer, WIDTH, WIDTH, HEIGHT, tvg::SwCanvas::ARGB8888);
 124
 125     /* Push the shape into the Canvas drawing list
 126        When this shape is into the canvas list, the shape could update & prepare
 127        internal data asynchronously for coming rendering.
 128        Canvas keeps this shape node unless user call canvas->clear() */
 129     tvgDrawCmds(swCanvas.get());
 130 }
 131
 132 void transitSwCb(Elm_Transit_Effect *effect, Elm_Transit* transit, double progress)
 133 {
 134     tvgUpdateCmds(swCanvas.get(), progress);
 135
 136     //Update Efl Canvas
 137     Eo* img = (Eo*) effect;
 138     evas_object_image_data_update_add(img, 0, 0, WIDTH, HEIGHT);
 139     evas_object_image_pixels_dirty_set(img, EINA_TRUE);
 140 }
 141
 142 void drawSwView(void* data, Eo* obj)
 143 {
 144     if (swCanvas->draw() == tvg::Result::Success) {
 145         swCanvas->sync();
 146     }
 147 }
 148
 149
 150 /************************************************************************/
 151 /* GL Engine Test Code                                                  */
 152 /************************************************************************/
 153
 154 static unique_ptr<tvg::GlCanvas> glCanvas;
 155
 156 void initGLview(Evas_Object *obj)
 157 {
 158     static constexpr auto BPP = 4;
 159
 160     //Create a Canvas
 161     glCanvas = tvg::GlCanvas::gen();
 162     glCanvas->target(nullptr, WIDTH * BPP, WIDTH, HEIGHT);
 163
 164     /* Push the shape into the Canvas drawing list
 165        When this shape is into the canvas list, the shape could update & prepare
 166        internal data asynchronously for coming rendering.
 167        Canvas keeps this shape node unless user call canvas->clear() */
 168     tvgDrawCmds(glCanvas.get());
 169 }
 170
 171 void drawGLview(Evas_Object *obj)
 172 {
 173     auto gl = elm_glview_gl_api_get(obj);
 174     gl->glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
 175     gl->glClear(GL_COLOR_BUFFER_BIT);
 176
 177     if (glCanvas->draw() == tvg::Result::Success) {
 178         glCanvas->sync();
 179     }
 180 }
 181
 182 void transitGlCb(Elm_Transit_Effect *effect, Elm_Transit* transit, double progress)
 183 {
 184     tvgUpdateCmds(glCanvas.get(), progress);
 185 }
 186
 187
 188 /************************************************************************/
 189 /* Main Code                                                            */
 190 /************************************************************************/
 191
 192 int main(int argc, char **argv)
 193 {
 194     tvg::CanvasEngine tvgEngine = tvg::CanvasEngine::Sw;
 195
 196     if (argc > 1) {
 197         if (!strcmp(argv[1], "gl")) tvgEngine = tvg::CanvasEngine::Gl;
 198     }
 199
 200     //Initialize ThorVG Engine
 201     if (tvgEngine == tvg::CanvasEngine::Sw) {
 202         cout << "tvg engine: software" << endl;
 203     } else {
 204         cout << "tvg engine: opengl" << endl;
 205     }
 206
 207     //Threads Count
 208     auto threads = std::thread::hardware_concurrency();
 209
 210     //Initialize ThorVG Engine
 211     if (tvg::Initializer::init(tvgEngine, threads) == tvg::Result::Success) {
 212
 213         elm_init(argc, argv);
 214
 215         Elm_Transit *transit = elm_transit_add();
 216
 217         if (tvgEngine == tvg::CanvasEngine::Sw) {
 218             auto view = createSwView();
 219             elm_transit_effect_add(transit, transitSwCb, view, nullptr);
 220         } else {
 221             auto view = createGlView();
 222             elm_transit_effect_add(transit, transitGlCb, view, nullptr);
 223         }
 224
 225         elm_transit_duration_set(transit, 2);
 226         elm_transit_repeat_times_set(transit, -1);
 227         elm_transit_auto_reverse_set(transit, EINA_TRUE);
 228         elm_transit_go(transit);
 229
 230         elm_run();
 231         elm_shutdown();
 232
 233         //Terminate ThorVG Engine
 234         tvg::Initializer::term(tvgEngine);
 235
 236     } else {
 237         cout << "engine is not supported" << endl;
 238     }
 239     return 0;
 240 }