source/root.cpp

   1 #include <msp/gl/blend.h>
   2 #include <msp/gl/extensions/arb_shader_objects.h>
   3 #include <msp/gl/programbuilder.h>
   4 #include <msp/gl/uniform.h>
   5 #include <msp/input/keys.h>
   6 #include <msp/time/units.h>
   7 #include <msp/time/utils.h>
   8 #include "label.h"
   9 #include "style.h"
  10 #include "root.h"
  11
  12 namespace Msp {
  13 namespace GLtk {
  14
  15 Root::Root(const Resources &r, Graphics::Window &window):
  16         resources(r),
  17         keyboard(new Input::Keyboard(window)),
  18         mouse(new Input::Mouse(window)),
  19         touchscreen(0),
  20         own_input(true)
  21 {
  22         init(&window);
  23 }
  24
  25 Root::Root(const Resources &r, Graphics::Window *window, Input::Keyboard *k, Input::Mouse *m, Input::Touchscreen *t):
  26         resources(r),
  27         keyboard(k),
  28         mouse(m),
  29         touchscreen(t),
  30         own_input(false)
  31 {
  32         init(window);
  33 }
  34
  35 void Root::init(Graphics::Window *window)
  36 {
  37         if(window)
  38                 set_geometry(Geometry(0, 0, window->get_width(), window->get_height()));
  39
  40         lbl_tooltip = 0;
  41         tooltip_target = 0;
  42
  43         camera.set_orthographic(geom.w, geom.h);
  44         update_camera();
  45
  46         if(GL::ARB_shader_objects)
  47         {
  48                 shprog = new GL::Program;
  49                 GL::ProgramBuilder::StandardFeatures features;
  50                 features.material = true;
  51                 features.texture = true;
  52                 GL::ProgramBuilder(features).add_shaders(*shprog);
  53                 shprog->link();
  54         }
  55         else
  56                 shprog = 0;
  57
  58         update_style();
  59
  60         if(mouse)
  61         {
  62                 mouse->signal_button_press.connect(sigc::mem_fun(this, &Root::button_press_event));
  63                 mouse->signal_button_release.connect(sigc::mem_fun(this, &Root::button_release_event));
  64                 mouse->signal_axis_motion.connect(sigc::mem_fun(this, &Root::axis_motion_event));
  65         }
  66
  67         if(keyboard)
  68         {
  69                 keyboard->signal_button_press.connect(sigc::mem_fun(this, &Root::key_press_event));
  70                 keyboard->signal_button_release.connect(sigc::mem_fun(this, &Root::key_release_event));
  71                 keyboard->signal_character.connect(sigc::mem_fun(this, &Root::character_event));
  72         }
  73
  74         if(touchscreen)
  75         {
  76                 touchscreen->signal_button_press.connect(sigc::mem_fun(this, &Root::touch_press_event));
  77                 touchscreen->signal_button_release.connect(sigc::mem_fun(this, &Root::touch_release_event));
  78                 touchscreen->signal_axis_motion.connect(sigc::mem_fun(this, &Root::touch_motion_event));
  79         }
  80 }
  81
  82 Root::~Root()
  83 {
  84         delete shprog;
  85         if(own_input)
  86         {
  87                 delete keyboard;
  88                 delete mouse;
  89         }
  90 }
  91
  92 void Root::tick()
  93 {
  94         if(tooltip_timeout && Time::now()>tooltip_timeout)
  95         {
  96                 std::string tip;
  97                 if(Widget *wdg = get_descendant_at(pointer_x, pointer_y))
  98                 {
  99                         tip = wdg->get_tooltip();
 100                         tooltip_target = wdg;
 101                 }
 102                 else
 103                 {
 104                         tip = signal_tooltip.emit(pointer_x, pointer_y);
 105                         tooltip_target = this;
 106                 }
 107
 108                 if(!tip.empty())
 109                 {
 110                         if(!lbl_tooltip)
 111                         {
 112                                 lbl_tooltip = new Label;
 113                                 add(*lbl_tooltip);
 114                                 lbl_tooltip->set_style("tooltip");
 115                         }
 116
 117                         lbl_tooltip->set_text(tip);
 118                         lbl_tooltip->autosize();
 119                         const Geometry &tip_geom = lbl_tooltip->get_geometry();
 120                         unsigned x = pointer_x+10;
 121                         unsigned y = pointer_y-10-lbl_tooltip->get_geometry().h;
 122                         if(x+tip_geom.w>geom.w)
 123                         {
 124                                 if(pointer_x>static_cast<int>(tip_geom.w+2))
 125                                         x = pointer_x-2-tip_geom.w;
 126                                 else
 127                                         x = geom.w-tip_geom.w;
 128                         }
 129                         lbl_tooltip->set_position(x, y);
 130                         raise(*lbl_tooltip);
 131                         lbl_tooltip->set_visible(true);
 132                 }
 133
 134                 tooltip_timeout = Time::TimeStamp();
 135         }
 136 }
 137
 138 void Root::render() const
 139 {
 140         GL::Bind bind_blend(GL::Blend::alpha());
 141
 142         GL::Renderer renderer(&camera);
 143         renderer.set_shader_program(shprog);
 144         Widget::render(renderer);
 145 }
 146
 147 bool Root::button_press_event(unsigned btn)
 148 {
 149         if(visible)
 150         {
 151                 Widget *old_focus = pointer_focus;
 152
 153                 int x, y;
 154                 get_pointer(x, y);
 155                 button_press(x, y, btn);
 156
 157                 if(pointer_focus || old_focus)
 158                         return true;
 159         }
 160
 161         return false;
 162 }
 163
 164 bool Root::button_release_event(unsigned btn)
 165 {
 166         if(visible)
 167         {
 168                 Widget *old_focus = pointer_focus;
 169
 170                 int x, y;
 171                 get_pointer(x, y);
 172                 button_release(x, y, btn);
 173
 174                 if(pointer_focus || old_focus)
 175                         return true;
 176         }
 177
 178         return false;
 179 }
 180
 181 bool Root::axis_motion_event(unsigned, float, float)
 182 {
 183         if(visible)
 184         {
 185                 int x, y;
 186                 get_pointer(x, y);
 187                 pointer_motion(x, y);
 188
 189                 if(!tooltip_target)
 190                 {
 191                         pointer_x = x;
 192                         pointer_y = y;
 193                         tooltip_timeout = Time::now()+700*Time::msec;
 194                 }
 195                 else if(get_descendant_at(x, y)!=tooltip_target)
 196                 {
 197                         if(lbl_tooltip)
 198                                 lbl_tooltip->set_visible(false);
 199                         tooltip_target = 0;
 200                 }
 201
 202                 if(pointer_focus)
 203                         return true;
 204         }
 205
 206         return false;
 207 }
 208
 209 bool Root::key_press_event(unsigned key)
 210 {
 211         // XXX Modifiers
 212         if(visible)
 213                 return key_press(key, 0);
 214
 215         return false;
 216 }
 217
 218 bool Root::key_release_event(unsigned key)
 219 {
 220         if(visible)
 221                 return key_release(key, 0);
 222
 223         return false;
 224 }
 225
 226 bool Root::character_event(StringCodec::unichar ch)
 227 {
 228         if(visible)
 229                 return character(ch);
 230
 231         return false;
 232 }
 233
 234 bool Root::touch_press_event(unsigned finger)
 235 {
 236         if(visible)
 237         {
 238                 Widget *old_focus = touch_focus;
 239
 240                 int x, y;
 241                 get_touch(finger, x, y);
 242                 touch_press(x, y, finger);
 243
 244                 if(touch_focus || old_focus)
 245                         return true;
 246         }
 247
 248         return false;
 249 }
 250
 251 bool Root::touch_release_event(unsigned finger)
 252 {
 253         if(visible)
 254         {
 255                 Widget *old_focus = touch_focus;
 256
 257                 int x, y;
 258                 get_touch(finger, x, y);
 259                 touch_release(x, y, finger);
 260
 261                 if(touch_focus || old_focus)
 262                         return true;
 263         }
 264
 265         return false;
 266 }
 267
 268 bool Root::touch_motion_event(unsigned axis, float, float)
 269 {
 270         if(visible)
 271         {
 272                 unsigned finger = axis/2;
 273                 int x, y;
 274                 get_touch(finger, x, y);
 275                 touch_motion(x, y, finger);
 276
 277                 if(touch_focus)
 278                         return true;
 279         }
 280
 281         return false;
 282 }
 283
 284 void Root::get_pointer(int &x, int &y)
 285 {
 286         x = (mouse->get_axis_value(0)*0.5+0.5)*geom.w;
 287         y = (mouse->get_axis_value(1)*0.5+0.5)*geom.h;
 288 }
 289
 290 void Root::get_touch(unsigned finger, int &x, int &y)
 291 {
 292         x = (touchscreen->get_axis_value(finger*2)*0.5+0.5)*geom.w;
 293         y = (touchscreen->get_axis_value(finger*2+1)*0.5+0.5)*geom.h;
 294 }
 295
 296 void Root::update_camera()
 297 {
 298         camera.set_position(GL::Vector3(geom.w/2.0f, geom.h/2.0f, geom.h/2.0f));
 299         camera.set_depth_clip(geom.h*0.1f, geom.h*0.9f);
 300         camera.set_orthographic(geom.w, geom.h);
 301 }
 302
 303 void Root::on_geometry_change()
 304 {
 305         Panel::on_geometry_change();
 306         update_camera();
 307 }
 308
 309 void Root::on_child_added(Widget &wdg)
 310 {
 311         if(&wdg!=lbl_tooltip)
 312                 Panel::on_child_added(wdg);
 313 }
 314
 315 } // namespace GLtk
 316 } // namespace Msp