source/root.cpp

   1 #include <msp/gl/blend.h>
   2 #include <msp/input/keys.h>
   3 #include <msp/time/units.h>
   4 #include <msp/time/utils.h>
   5 #include "label.h"
   6 #include "style.h"
   7 #include "root.h"
   8
   9 namespace Msp {
  10 namespace GLtk {
  11
  12 Root::Root(const Resources &r, Graphics::Window &w):
  13         resources(r),
  14         window(w),
  15         lbl_tooltip(0),
  16         tooltip_target(0)
  17 {
  18         set_geometry(Geometry(0, 0, window.get_width(), window.get_height()));
  19
  20         update_style();
  21
  22         window.signal_button_press.connect(sigc::mem_fun(this, &Root::button_press_event));
  23         window.signal_button_release.connect(sigc::mem_fun(this, &Root::button_release_event));
  24         window.signal_pointer_motion.connect(sigc::mem_fun(this, &Root::pointer_motion_event));
  25         window.signal_key_press.connect(sigc::mem_fun(this, &Root::key_press_event));
  26         window.signal_key_release.connect(sigc::mem_fun(this, &Root::key_release_event));
  27 }
  28
  29 void Root::tick()
  30 {
  31         if(tooltip_timeout && Time::now()>tooltip_timeout)
  32         {
  33                 std::string tip;
  34                 if(Widget *wdg = get_descendant_at(pointer_x, pointer_y))
  35                 {
  36                         tip = wdg->get_tooltip();
  37                         tooltip_target = wdg;
  38                 }
  39                 else
  40                 {
  41                         tip = signal_tooltip.emit(pointer_x, pointer_y);
  42                         tooltip_target = this;
  43                 }
  44
  45                 if(!tip.empty())
  46                 {
  47                         if(!lbl_tooltip)
  48                         {
  49                                 lbl_tooltip = new Label;
  50                                 add(*lbl_tooltip);
  51                                 lbl_tooltip->set_style("tooltip");
  52                         }
  53
  54                         lbl_tooltip->set_text(tip);
  55                         lbl_tooltip->autosize();
  56                         const Geometry &tip_geom = lbl_tooltip->get_geometry();
  57                         unsigned x = pointer_x+10;
  58                         unsigned y = pointer_y-10-lbl_tooltip->get_geometry().h;
  59                         if(x+tip_geom.w>geom.w)
  60                         {
  61                                 if(pointer_x>static_cast<int>(tip_geom.w+2))
  62                                         x = pointer_x-2-tip_geom.w;
  63                                 else
  64                                         x = geom.w-tip_geom.w;
  65                         }
  66                         lbl_tooltip->set_position(x, y);
  67                         raise(*lbl_tooltip);
  68                         lbl_tooltip->set_visible(true);
  69                 }
  70
  71                 tooltip_timeout = Time::TimeStamp();
  72         }
  73 }
  74
  75 void Root::render() const
  76 {
  77         GL::MatrixStack::projection() = GL::Matrix::ortho_bottomleft(geom.w, geom.h);
  78         GL::MatrixStack::modelview() = GL::Matrix();
  79         GL::Bind bind_blend(GL::Blend::alpha());
  80
  81         Widget::render();
  82 }
  83
  84 void Root::button_press_event(int x, int y, unsigned btn, unsigned mod)
  85 {
  86         if(visible)
  87         {
  88                 Widget *old_focus = pointer_focus;
  89
  90                 translate_coords(x, y);
  91                 button_press(x, y, btn);
  92
  93                 if(!pointer_focus && !old_focus)
  94                         signal_button_press.emit(x, geom.h-1-y, btn, mod);
  95         }
  96 }
  97
  98 void Root::button_release_event(int x, int y, unsigned btn, unsigned mod)
  99 {
 100         if(visible)
 101         {
 102                 Widget *old_focus = pointer_focus;
 103
 104                 translate_coords(x, y);
 105                 button_release(x, y, btn);
 106
 107                 if(!pointer_focus && !old_focus)
 108                         signal_button_release.emit(x, geom.h-1-y, btn, mod);
 109         }
 110 }
 111
 112 void Root::pointer_motion_event(int x, int y)
 113 {
 114         if(visible)
 115         {
 116                 translate_coords(x, y);
 117                 pointer_motion(x, y);
 118
 119                 if(!tooltip_target)
 120                 {
 121                         pointer_x = x;
 122                         pointer_y = y;
 123                         tooltip_timeout = Time::now()+700*Time::msec;
 124                 }
 125                 else if(get_descendant_at(x, y)!=tooltip_target)
 126                 {
 127                         if(lbl_tooltip)
 128                                 lbl_tooltip->set_visible(false);
 129                         tooltip_target = 0;
 130                 }
 131
 132                 if(!pointer_focus)
 133                         signal_pointer_motion.emit(x, geom.h-1-y);
 134         }
 135 }
 136
 137 void Root::key_press_event(unsigned key, unsigned mod, wchar_t ch)
 138 {
 139         if(visible)
 140         {
 141                 Widget *old_focus = input_focus;
 142
 143                 key_press(Input::key_from_sys(key), mod, ch);
 144
 145                 if(!input_focus && !old_focus)
 146                         signal_key_press.emit(key, mod, ch);
 147         }
 148 }
 149
 150 void Root::key_release_event(unsigned key, unsigned mod)
 151 {
 152         if(visible)
 153         {
 154                 Widget *old_focus = input_focus;
 155
 156                 key_release(Input::key_from_sys(key), mod);
 157
 158                 if(!input_focus && !old_focus)
 159                         signal_key_release.emit(key, mod);
 160         }
 161 }
 162
 163 void Root::translate_coords(int &x, int &y)
 164 {
 165         x = x*geom.w/window.get_width();
 166         y = geom.h-1-y*geom.h/window.get_height();
 167 }
 168
 169 } // namespace GLtk
 170 } // namespace Msp