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 #include "systemkeyboardinput.h"
  12
  13 namespace Msp {
  14 namespace GLtk {
  15
  16 Root::Root(Resources &r, Graphics::Window &window):
  17         resources(r),
  18         keyboard(new Input::Keyboard(window)),
  19         input_method(0),
  20         mouse(new Input::Mouse(window)),
  21         touchscreen(0),
  22         own_input(true)
  23 {
  24         init(&window);
  25 }
  26
  27 Root::Root(Resources &r, Graphics::Window *window, Input::Keyboard *k, Input::Mouse *m, Input::Touchscreen *t):
  28         resources(r),
  29         keyboard(k),
  30         input_method(0),
  31         mouse(m),
  32         touchscreen(t),
  33         own_input(false)
  34 {
  35         init(window);
  36 }
  37
  38 void Root::init(Graphics::Window *window)
  39 {
  40         if(window)
  41                 set_geometry(Geometry(0, 0, window->get_width(), window->get_height()));
  42
  43         lbl_tooltip = 0;
  44         tooltip_target = 0;
  45
  46         camera.set_orthographic(geom.w, geom.h);
  47         update_camera();
  48
  49         if(GL::ARB_shader_objects)
  50         {
  51                 shprog = new GL::Program;
  52                 GL::ProgramBuilder::StandardFeatures features;
  53                 features.material = true;
  54                 features.texture = true;
  55                 GL::ProgramBuilder(features).add_shaders(*shprog);
  56                 shprog->link();
  57         }
  58         else
  59                 shprog = 0;
  60
  61         update_style();
  62
  63         if(mouse)
  64         {
  65                 mouse->signal_button_press.connect(sigc::mem_fun(this, &Root::button_press_event));
  66                 mouse->signal_button_release.connect(sigc::mem_fun(this, &Root::button_release_event));
  67                 mouse->signal_axis_motion.connect(sigc::mem_fun(this, &Root::axis_motion_event));
  68         }
  69
  70         if(keyboard && !input_method)
  71                 input_method = new SystemKeyboardInput(*this, *keyboard);
  72
  73         if(touchscreen)
  74         {
  75                 touchscreen->signal_button_press.connect(sigc::mem_fun(this, &Root::touch_press_event));
  76                 touchscreen->signal_button_release.connect(sigc::mem_fun(this, &Root::touch_release_event));
  77                 touchscreen->signal_axis_motion.connect(sigc::mem_fun(this, &Root::touch_motion_event));
  78         }
  79 }
  80
  81 Root::~Root()
  82 {
  83         delete shprog;
  84         delete input_method;
  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 GL::Tag &tag) const
 139 {
 140         if(tag.id)
 141                 return;
 142
 143         GL::Bind bind_blend(GL::Blend::alpha());
 144
 145         GL::Renderer renderer(&camera);
 146         renderer.set_shader_program(shprog);
 147         Widget::render(renderer);
 148 }
 149
 150 void Root::render(GL::Renderer &renderer, const GL::Tag &tag) const
 151 {
 152         if(tag.id)
 153                 return;
 154
 155         renderer.end();
 156         render(tag);
 157 }
 158
 159 bool Root::button_press_event(unsigned btn)
 160 {
 161         if(visible)
 162         {
 163                 Widget *old_focus = pointer_focus;
 164
 165                 int x, y;
 166                 get_pointer(x, y);
 167                 button_press(x, y, btn);
 168
 169                 if(pointer_focus || old_focus)
 170                         return true;
 171         }
 172
 173         return false;
 174 }
 175
 176 bool Root::button_release_event(unsigned btn)
 177 {
 178         if(visible)
 179         {
 180                 Widget *old_focus = pointer_focus;
 181
 182                 int x, y;
 183                 get_pointer(x, y);
 184                 button_release(x, y, btn);
 185
 186                 if(pointer_focus || old_focus)
 187                         return true;
 188         }
 189
 190         return false;
 191 }
 192
 193 bool Root::axis_motion_event(unsigned, float, float)
 194 {
 195         if(visible)
 196         {
 197                 int x, y;
 198                 get_pointer(x, y);
 199                 pointer_motion(x, y);
 200
 201                 if(!tooltip_target)
 202                 {
 203                         pointer_x = x;
 204                         pointer_y = y;
 205                         tooltip_timeout = Time::now()+700*Time::msec;
 206                 }
 207                 else if(get_descendant_at(x, y)!=tooltip_target)
 208                 {
 209                         if(lbl_tooltip)
 210                                 lbl_tooltip->set_visible(false);
 211                         tooltip_target = 0;
 212                 }
 213
 214                 if(pointer_focus)
 215                         return true;
 216         }
 217
 218         return false;
 219 }
 220
 221 bool Root::touch_press_event(unsigned finger)
 222 {
 223         if(visible)
 224         {
 225                 Widget *old_focus = touch_focus;
 226
 227                 int x, y;
 228                 get_touch(finger, x, y);
 229                 touch_press(x, y, finger);
 230
 231                 if(touch_focus || old_focus)
 232                         return true;
 233         }
 234
 235         return false;
 236 }
 237
 238 bool Root::touch_release_event(unsigned finger)
 239 {
 240         if(visible)
 241         {
 242                 Widget *old_focus = touch_focus;
 243
 244                 int x, y;
 245                 get_touch(finger, x, y);
 246                 touch_release(x, y, finger);
 247
 248                 if(touch_focus || old_focus)
 249                         return true;
 250         }
 251
 252         return false;
 253 }
 254
 255 bool Root::touch_motion_event(unsigned axis, float, float)
 256 {
 257         if(visible)
 258         {
 259                 unsigned finger = axis/2;
 260                 int x, y;
 261                 get_touch(finger, x, y);
 262                 touch_motion(x, y, finger);
 263
 264                 if(touch_focus)
 265                         return true;
 266         }
 267
 268         return false;
 269 }
 270
 271 void Root::get_pointer(int &x, int &y)
 272 {
 273         x = (mouse->get_axis_value(0)*0.5+0.5)*geom.w;
 274         y = (mouse->get_axis_value(1)*0.5+0.5)*geom.h;
 275 }
 276
 277 void Root::get_touch(unsigned finger, int &x, int &y)
 278 {
 279         x = (touchscreen->get_axis_value(finger*2)*0.5+0.5)*geom.w;
 280         y = (touchscreen->get_axis_value(finger*2+1)*0.5+0.5)*geom.h;
 281 }
 282
 283 void Root::update_camera()
 284 {
 285         camera.set_position(GL::Vector3(geom.w/2.0f, geom.h/2.0f, geom.h/2.0f));
 286         camera.set_depth_clip(geom.h*0.1f, geom.h*0.9f);
 287         camera.set_orthographic(geom.w, geom.h);
 288 }
 289
 290 void Root::on_geometry_change()
 291 {
 292         Panel::on_geometry_change();
 293         update_camera();
 294 }
 295
 296 void Root::on_child_added(Widget &wdg)
 297 {
 298         if(&wdg!=lbl_tooltip)
 299                 Panel::on_child_added(wdg);
 300 }
 301
 302 } // namespace GLtk
 303 } // namespace Msp