example/user_interaction_touch.cpp

   1 #include <thread>
   2 #include <Elementary.h>
   3 #include <rive_tizen.hpp>
   4
   5 #include "node.hpp"
   6 #include "animation/linear_animation_instance.hpp"
   7 #include "artboard.hpp"
   8 #include "file.hpp"
   9 #include "tvg_renderer.hpp"
  10
  11 #define WIDTH 1000
  12 #define HEIGHT 1000
  13
  14 static unique_ptr<tvg::SwCanvas> canvas = nullptr;
  15 static rive::Artboard* artboard = nullptr;
  16 static rive::LinearAnimationInstance* animationInstance;
  17 static Eo* view = nullptr;
  18 static double lastTime;
  19 int isOpen = true;
  20
  21 static void deleteWindow(void *data, Evas_Object *obj, void *ev)
  22 {
  23     elm_exit();
  24 }
  25
  26 static void drawToCanvas(void* data, Eo* obj)
  27 {
  28     if (canvas->draw() == tvg::Result::Success) canvas->sync();
  29 }
  30
  31 static void initAnimation(int index)
  32 {
  33     delete animationInstance;
  34     animationInstance = nullptr;
  35
  36     auto animation = artboard->animation(index);
  37     if (animation) animationInstance = new rive::LinearAnimationInstance(animation);
  38 }
  39
  40 static void loadRiveFile(const char* filename)
  41 {
  42     lastTime = ecore_time_get();    //Check point
  43
  44     // Load Rive File
  45     FILE* fp = fopen(filename, "r");
  46
  47     fseek(fp, 0, SEEK_END);
  48     size_t length = ftell(fp);
  49     fseek(fp, 0, SEEK_SET);
  50
  51     uint8_t* bytes = new uint8_t[length];
  52     if (fread(bytes, 1, length, fp) != length)
  53     {
  54        delete[] bytes;
  55        fprintf(stderr, "failed to read all of %s\n", filename);
  56        fclose(fp);
  57        return;
  58     }
  59
  60     auto reader = rive::BinaryReader(bytes, length);
  61     rive::File* file = nullptr;
  62     auto result = rive::File::import(reader, &file);
  63     if (result != rive::ImportResult::success)
  64     {
  65        delete[] bytes;
  66        fprintf(stderr, "failed to import %s\n", filename);
  67        fclose(fp);
  68        return;
  69     }
  70
  71     artboard = file->artboard();
  72     artboard->advance(0.0f);
  73
  74     auto animation = artboard->firstAnimation();
  75     if (animation) animationInstance = new rive::LinearAnimationInstance(animation);
  76
  77     delete[] bytes;
  78     fclose(fp);
  79 }
  80
  81 Eina_Bool animationLoop(void *data)
  82 {
  83     canvas->clear();
  84
  85     double currentTime = ecore_time_get();
  86     float elapsed = currentTime - lastTime;
  87     lastTime = currentTime;
  88
  89     if (!artboard || !animationInstance) return ECORE_CALLBACK_RENEW;
  90
  91     artboard->updateComponents();
  92
  93     animationInstance->advance(elapsed);
  94     animationInstance->apply(artboard);
  95
  96     artboard->advance(elapsed);
  97
  98     rive::TvgRenderer renderer(canvas.get());
  99     renderer.save();
 100     renderer.align(rive::Fit::contain,
 101                    rive::Alignment::center,
 102                    rive::AABB(0, 0, WIDTH, HEIGHT),
 103                    artboard->bounds());
 104     artboard->draw(&renderer);
 105     renderer.restore();
 106
 107     evas_object_image_pixels_dirty_set(view, EINA_TRUE);
 108     evas_object_image_data_update_add(view, 0, 0, WIDTH, HEIGHT);
 109
 110     return ECORE_CALLBACK_RENEW;
 111 }
 112
 113 static void runExample(uint32_t* buffer)
 114 {
 115     std::string path = RIVE_FILE_DIR;
 116     path.append("barrier.riv");
 117     loadRiveFile(path.c_str());
 118     printf("Please touch the star to open and close the barrier!\n");
 119
 120     //Create a Canvas
 121     canvas = tvg::SwCanvas::gen();
 122     canvas->target(buffer, WIDTH, WIDTH, HEIGHT, tvg::SwCanvas::ARGB8888);
 123     ecore_animator_add(animationLoop, nullptr);
 124 }
 125
 126 static void cleanExample()
 127 {
 128     delete animationInstance;
 129     animationInstance = nullptr;
 130 }
 131
 132 static void mouseUpCb(void *data, Evas *evas EINA_UNUSED, Evas_Object *obj, void *event_info)
 133 {
 134    Evas_Event_Mouse_Up *ev = (Evas_Event_Mouse_Up*)event_info;
 135
 136    int up_x = ev->canvas.x;
 137    int up_y = ev->canvas.y;
 138
 139    auto root = artboard->find("Star");
 140    auto nodeRoot = root->as<rive::Node>();
 141
 142    // Note: The worldTransform values are based on the artboard size.
 143    // If the renderer alignment transform is applied
 144    // since the view raito is different with the artboard ratio,
 145    // The artboard scale and start position should be considered
 146    // to match the touch position.
 147    rive::Mat2D mat = nodeRoot->worldTransform();
 148
 149    float nodePosX = mat[4];
 150    float nodePosY = mat[5];
 151
 152    float distance = sqrt(pow(up_x - nodePosX, 2) + pow(up_y - nodePosY, 2));
 153    // 10 is the constant value for touching area
 154    if (distance < 10)
 155    {
 156       if (isOpen)
 157       {
 158         initAnimation(2);
 159         isOpen = false;
 160         printf("close\n");
 161       }
 162       else
 163       {
 164         initAnimation(0);
 165         isOpen = true;
 166         printf("open\n");
 167       }
 168    }
 169 }
 170
 171 static void setupScreen(uint32_t* buffer)
 172 {
 173     Eo* win = elm_win_util_standard_add(nullptr, "Rive-Tizen Viewer");
 174     evas_object_smart_callback_add(win, "delete,request", deleteWindow, 0);
 175
 176     view = evas_object_image_filled_add(evas_object_evas_get(win));
 177     evas_object_image_size_set(view, WIDTH, HEIGHT);
 178     evas_object_image_data_set(view, buffer);
 179     evas_object_image_pixels_get_callback_set(view, drawToCanvas, nullptr);
 180     evas_object_image_pixels_dirty_set(view, EINA_TRUE);
 181     evas_object_image_data_update_add(view, 0, 0, WIDTH, HEIGHT);
 182     evas_object_size_hint_weight_set(view, EVAS_HINT_EXPAND, 0.0);
 183     evas_object_size_hint_min_set(view, WIDTH, HEIGHT);
 184     evas_object_show(view);
 185     elm_win_resize_object_add(win, view);
 186
 187     evas_object_event_callback_add(view, EVAS_CALLBACK_MOUSE_UP, mouseUpCb, nullptr);
 188
 189     evas_object_resize(win, WIDTH, HEIGHT);
 190     evas_object_show(win);
 191 }
 192
 193 int main(int argc, char **argv)
 194 {
 195     static uint32_t buffer[WIDTH * HEIGHT];
 196
 197     tvg::Initializer::init(tvg::CanvasEngine::Sw, thread::hardware_concurrency());
 198
 199     elm_init(argc, argv);
 200
 201     setupScreen(buffer);
 202
 203     runExample(buffer);
 204
 205     elm_run();
 206
 207     cleanExample();
 208
 209     elm_shutdown();
 210
 211     tvg::Initializer::term(tvg::CanvasEngine::Sw);
 212
 213     return 0;
 214 }