source/root.cpp

   1 #include <msp/gl/blend.h>
   2 #include <msp/input/keys.h>
   3 #include <msp/time/utils.h>
   4 #include "label.h"
   5 #include "style.h"
   6 #include "resources.h"
   7 #include "root.h"
   8 #include "systemkeyboardinput.h"
   9
  10 using namespace std;
  11
  12 namespace Msp {
  13 namespace GLtk {
  14
  15 Root::Root(Resources &r, Graphics::Window &window, unique_ptr<Input::Keyboard> k, unique_ptr<Input::Mouse> m):
  16         Root(r, &window, k.get(), m.get(), nullptr)
  17 {
  18         own_input[0] = move(k);
  19         own_input[1] = move(m);
  20 }
  21
  22 Root::Root(Resources &r, Graphics::Window &window):
  23         Root(r, window, make_unique<Input::Keyboard>(window), make_unique<Input::Mouse>(window))
  24 { }
  25
  26 Root::Root(Resources &r, Graphics::Window *window, Input::Keyboard *k, Input::Mouse *m, Input::Touchscreen *t):
  27         resources(r),
  28         keyboard(k),
  29         mouse(m),
  30         touchscreen(t)
  31 {
  32         if(window)
  33                 set_geometry(Geometry(0, 0, window->get_width(), window->get_height()));
  34
  35         camera.set_orthographic(geom.w, geom.h);
  36         update_camera();
  37
  38         shprog = &resources.get<GL::Program>("ui.shader");
  39
  40         blend.enabled = true;
  41         blend.src_factor = GL::SRC_ALPHA;
  42         blend.dst_factor = GL::ONE_MINUS_SRC_ALPHA;
  43
  44         if(keyboard)
  45                 set_state(FOCUS);
  46
  47         update_style();
  48
  49         if(mouse)
  50         {
  51                 mouse->signal_button_press.connect(sigc::mem_fun(this, &Root::button_press_event));
  52                 mouse->signal_button_release.connect(sigc::mem_fun(this, &Root::button_release_event));
  53                 mouse->signal_axis_motion.connect(sigc::mem_fun(this, &Root::axis_motion_event));
  54         }
  55
  56         if(keyboard && !input_method)
  57                 input_method = make_unique<SystemKeyboardInput>(*this, *keyboard);
  58
  59         if(touchscreen)
  60         {
  61                 touchscreen->signal_button_press.connect(sigc::mem_fun(this, &Root::touch_press_event));
  62                 touchscreen->signal_button_release.connect(sigc::mem_fun(this, &Root::touch_release_event));
  63                 touchscreen->signal_axis_motion.connect(sigc::mem_fun(this, &Root::touch_motion_event));
  64         }
  65 }
  66
  67 void Root::tick()
  68 {
  69         Time::TimeStamp t = Time::now();
  70         Time::TimeDelta dt = (last_tick ? t-last_tick : Time::zero);
  71         last_tick = t;
  72
  73         animate(dt);
  74
  75         if(tooltip_timeout && Time::now()>tooltip_timeout)
  76         {
  77                 std::string tip;
  78                 if(Widget *wdg = find_descendant_at(pointer_x, pointer_y))
  79                 {
  80                         tip = wdg->get_tooltip();
  81                         tooltip_target = wdg;
  82                 }
  83                 else
  84                 {
  85                         tip = signal_tooltip.emit(pointer_x, pointer_y);
  86                         tooltip_target = this;
  87                 }
  88
  89                 if(!tip.empty())
  90                 {
  91                         if(!lbl_tooltip)
  92                         {
  93                                 lbl_tooltip = &add_new<Label>();
  94                                 lbl_tooltip->set_style("tooltip");
  95                         }
  96
  97                         lbl_tooltip->set_text(tip);
  98                         lbl_tooltip->autosize();
  99                         const Geometry &tip_geom = lbl_tooltip->get_geometry();
 100                         unsigned x = pointer_x+10;
 101                         unsigned y = pointer_y-10-lbl_tooltip->get_geometry().h;
 102                         if(x+tip_geom.w>geom.w)
 103                         {
 104                                 if(pointer_x>static_cast<int>(tip_geom.w+2))
 105                                         x = pointer_x-2-tip_geom.w;
 106                                 else
 107                                         x = geom.w-tip_geom.w;
 108                         }
 109                         lbl_tooltip->set_position(x, y);
 110                         raise(*lbl_tooltip);
 111                         lbl_tooltip->set_visible(true);
 112                 }
 113
 114                 tooltip_timeout = Time::TimeStamp();
 115         }
 116 }
 117
 118 void Root::setup_frame(GL::Renderer &)
 119 {
 120         rebuild_hierarchy();
 121 }
 122
 123 void Root::render(GL::Renderer &renderer, GL::Tag tag) const
 124 {
 125         if(tag.id)
 126                 return;
 127
 128         GL::Renderer::Push push(renderer);
 129         renderer.set_camera(camera);
 130         renderer.set_shader_program(shprog);
 131         renderer.set_blend(&blend);
 132         renderer.set_depth_test(nullptr);
 133         Widget::render(renderer);
 134 }
 135
 136 bool Root::button_press_event(unsigned btn)
 137 {
 138         if(visible)
 139         {
 140                 Widget *old_focus = pointer_focus;
 141
 142                 int x, y;
 143                 get_pointer(x, y);
 144                 button_press(x, y, btn);
 145
 146                 if(pointer_focus || old_focus)
 147                         return true;
 148         }
 149
 150         return false;
 151 }
 152
 153 bool Root::button_release_event(unsigned btn)
 154 {
 155         if(visible)
 156         {
 157                 Widget *old_focus = pointer_focus;
 158
 159                 int x, y;
 160                 get_pointer(x, y);
 161                 button_release(x, y, btn);
 162
 163                 if(pointer_focus || old_focus)
 164                         return true;
 165         }
 166
 167         return false;
 168 }
 169
 170 bool Root::axis_motion_event(unsigned, float, float)
 171 {
 172         if(visible)
 173         {
 174                 int x, y;
 175                 get_pointer(x, y);
 176                 pointer_motion(x, y);
 177
 178                 if(!tooltip_target)
 179                 {
 180                         pointer_x = x;
 181                         pointer_y = y;
 182                         tooltip_timeout = Time::now()+700*Time::msec;
 183                 }
 184                 else if(find_descendant_at(x, y)!=tooltip_target)
 185                 {
 186                         if(lbl_tooltip)
 187                                 lbl_tooltip->set_visible(false);
 188                         tooltip_target = nullptr;
 189                 }
 190
 191                 if(pointer_focus)
 192                         return true;
 193         }
 194
 195         return false;
 196 }
 197
 198 bool Root::touch_press_event(unsigned finger)
 199 {
 200         if(visible)
 201         {
 202                 Widget *old_focus = touch_focus;
 203
 204                 int x, y;
 205                 get_touch(finger, x, y);
 206                 touch_press(x, y, finger);
 207
 208                 if(touch_focus || old_focus)
 209                         return true;
 210         }
 211
 212         return false;
 213 }
 214
 215 bool Root::touch_release_event(unsigned finger)
 216 {
 217         if(visible)
 218         {
 219                 Widget *old_focus = touch_focus;
 220
 221                 int x, y;
 222                 get_touch(finger, x, y);
 223                 touch_release(x, y, finger);
 224
 225                 if(touch_focus || old_focus)
 226                         return true;
 227         }
 228
 229         return false;
 230 }
 231
 232 bool Root::touch_motion_event(unsigned axis, float, float)
 233 {
 234         if(visible)
 235         {
 236                 unsigned finger = axis/2;
 237                 int x, y;
 238                 get_touch(finger, x, y);
 239                 touch_motion(x, y, finger);
 240
 241                 if(touch_focus)
 242                         return true;
 243         }
 244
 245         return false;
 246 }
 247
 248 void Root::get_pointer(int &x, int &y)
 249 {
 250         x = (mouse->get_axis_value(0)*0.5+0.5)*geom.w;
 251         y = (mouse->get_axis_value(1)*0.5+0.5)*geom.h;
 252 }
 253
 254 void Root::get_touch(unsigned finger, int &x, int &y)
 255 {
 256         x = (touchscreen->get_axis_value(finger*2)*0.5+0.5)*geom.w;
 257         y = (touchscreen->get_axis_value(finger*2+1)*0.5+0.5)*geom.h;
 258 }
 259
 260 void Root::update_camera()
 261 {
 262         camera.set_position(GL::Vector3(geom.w/2.0f, geom.h/2.0f, geom.h/2.0f));
 263         camera.set_depth_clip(geom.h*0.1f, geom.h*0.9f);
 264         camera.set_orthographic(geom.w, geom.h);
 265 }
 266
 267 void Root::on_size_change()
 268 {
 269         Panel::on_size_change();
 270         update_camera();
 271 }
 272
 273 void Root::on_child_added(Widget &wdg)
 274 {
 275         if(&wdg!=lbl_tooltip)
 276                 Panel::on_child_added(wdg);
 277 }
 278
 279 } // namespace GLtk
 280 } // namespace Msp