example/user_interaction_follow_cursor.cpp

   1 #include <thread>
   2 #include <dirent.h>
   3 #include <algorithm>
   4 #include <Elementary.h>
   5 #include <rive_tizen.hpp>
   6
   7 #include "node.hpp"
   8 #include "animation/linear_animation_instance.hpp"
   9 #include "artboard.hpp"
  10 #include "file.hpp"
  11 #include "tvg_renderer.hpp"
  12
  13 using namespace std;
  14
  15 #define WIDTH 1000
  16 #define HEIGHT 700
  17 #define LIST_HEIGHT 200
  18
  19 static unique_ptr<tvg::SwCanvas> canvas = nullptr;
  20 static rive::File* currentFile = nullptr;
  21 static rive::Artboard* artboard = nullptr;
  22 static rive::LinearAnimationInstance* animationInstance;
  23 static Ecore_Animator *animator = nullptr;
  24 static Eo* view = nullptr;
  25 static double lastTime;
  26
  27 static void deleteWindow(void *data, Evas_Object *obj, void *ev)
  28 {
  29     elm_exit();
  30 }
  31
  32 static void drawToCanvas(void* data, Eo* obj)
  33 {
  34     if (canvas->draw() == tvg::Result::Success) canvas->sync();
  35 }
  36
  37 static void loadRiveFile(const char* filename)
  38 {
  39     lastTime = ecore_time_get();
  40
  41     // Load Rive File
  42     FILE* fp = fopen(filename, "r");
  43
  44     fseek(fp, 0, SEEK_END);
  45     size_t length = ftell(fp);
  46     fseek(fp, 0, SEEK_SET);
  47
  48     uint8_t* bytes = new uint8_t[length];
  49     if (fread(bytes, 1, length, fp) != length)
  50     {
  51        delete[] bytes;
  52        fprintf(stderr, "failed to read all of %s\n", filename);
  53        return;
  54     }
  55
  56     auto reader = rive::BinaryReader(bytes, length);
  57     rive::File* file = nullptr;
  58     auto result = rive::File::import(reader, &file);
  59     if (result != rive::ImportResult::success)
  60     {
  61        delete[] bytes;
  62        fprintf(stderr, "failed to import %s\n", filename);
  63        return;
  64     }
  65
  66     artboard = file->artboard();
  67     artboard->advance(0.0f);
  68
  69     delete animationInstance;
  70     animationInstance = nullptr;
  71
  72     auto animation = artboard->firstAnimation();
  73     if (animation) animationInstance = new rive::LinearAnimationInstance(animation);
  74
  75     delete currentFile;
  76     currentFile = file;
  77
  78     delete[] bytes;
  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) return ECORE_CALLBACK_RENEW;
  90
  91     animationInstance->advance(elapsed);
  92     animationInstance->apply(artboard);
  93
  94     artboard->advance(elapsed);
  95
  96     rive::TvgRenderer renderer(canvas.get());
  97     renderer.save();
  98     renderer.align(rive::Fit::contain,
  99                    rive::Alignment::center,
 100                    rive::AABB(0, 0, WIDTH, HEIGHT),
 101                    artboard->bounds());
 102     artboard->draw(&renderer);
 103     renderer.restore();
 104
 105     evas_object_image_pixels_dirty_set(view, EINA_TRUE);
 106     evas_object_image_data_update_add(view, 0, 0, WIDTH, HEIGHT);
 107
 108     return ECORE_CALLBACK_RENEW;
 109 }
 110
 111 static void runExample(uint32_t* buffer)
 112 {
 113     std::string path = RIVE_FILE_DIR;
 114     path.append("flame-and-spark.riv");
 115     loadRiveFile(path.c_str());
 116
 117     //Create a Canvas
 118     canvas = tvg::SwCanvas::gen();
 119     canvas->target(buffer, WIDTH, WIDTH, HEIGHT, tvg::SwCanvas::ARGB8888);
 120     animator = ecore_animator_add(animationLoop, nullptr);
 121 }
 122
 123 static void cleanExample()
 124 {
 125    delete animationInstance;
 126 }
 127
 128 static void mouseMoveCb(void *data, Evas *evas EINA_UNUSED, Evas_Object *obj, void *event_info)
 129 {
 130    Evas_Event_Mouse_Move *ev = (Evas_Event_Mouse_Move*)event_info;
 131
 132    int viewx, viewy;
 133    evas_object_geometry_get(obj, &viewx, &viewy, nullptr, nullptr);
 134
 135    // Viewx and viewy are the view start position
 136    int posx = ev->cur.canvas.x - viewx;
 137    // 250 is the constant for align y center
 138    int posy = ev->cur.canvas.y - viewy + 250;
 139
 140    // Get the root instance
 141    auto root = artboard->find("root");
 142    auto nodeRoot = root->as<rive::Node>();
 143
 144    auto spark = artboard->find("spark");
 145    auto nodeSpark = spark->as<rive::Node>();
 146
 147    // Set root position
 148    nodeRoot->x(posx);
 149    nodeRoot->y(posy);
 150
 151    // Set spark position, 400 is the constant
 152    nodeSpark->x(posx - 400);
 153    nodeSpark->y(posy);
 154 }
 155
 156 static void setupScreen(uint32_t* buffer)
 157 {
 158     Eo* win = elm_win_util_standard_add(nullptr, "Rive-Tizen Viewer");
 159     evas_object_smart_callback_add(win, "delete,request", deleteWindow, 0);
 160
 161     Eo* box = elm_box_add(win);
 162     evas_object_size_hint_weight_set(box, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 163     elm_win_resize_object_add(win, box);
 164     evas_object_show(box);
 165
 166     view = evas_object_image_filled_add(evas_object_evas_get(box));
 167     evas_object_image_size_set(view, WIDTH, HEIGHT);
 168     evas_object_image_data_set(view, buffer);
 169     evas_object_image_pixels_get_callback_set(view, drawToCanvas, nullptr);
 170     evas_object_image_pixels_dirty_set(view, EINA_TRUE);
 171     evas_object_image_data_update_add(view, 0, 0, WIDTH, HEIGHT);
 172     evas_object_size_hint_weight_set(view, EVAS_HINT_EXPAND, 0.0);
 173     evas_object_size_hint_min_set(view, WIDTH, HEIGHT);
 174     evas_object_show(view);
 175     elm_box_pack_end(box, view);
 176
 177     evas_object_event_callback_add(view, EVAS_CALLBACK_MOUSE_MOVE, mouseMoveCb, nullptr);
 178
 179     evas_object_resize(win, WIDTH, HEIGHT + LIST_HEIGHT);
 180     evas_object_show(win);
 181 }
 182
 183 int main(int argc, char **argv)
 184 {
 185     static uint32_t buffer[WIDTH * HEIGHT];
 186
 187     tvg::Initializer::init(tvg::CanvasEngine::Sw, thread::hardware_concurrency());
 188
 189     elm_init(argc, argv);
 190
 191     setupScreen(buffer);
 192
 193     runExample(buffer);
 194
 195     elm_run();
 196
 197     cleanExample();
 198
 199     elm_shutdown();
 200
 201     tvg::Initializer::term(tvg::CanvasEngine::Sw);
 202
 203     return 0;
 204 }