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