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/tests.h>
   5 #include <msp/gl/uniform.h>
   6 #include <msp/input/keys.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         Time::TimeStamp t = Time::now();
  95         Time::TimeDelta dt = (last_tick ? t-last_tick : Time::zero);
  96         last_tick = t;
  97
  98         animate(dt);
  99
 100         if(tooltip_timeout && Time::now()>tooltip_timeout)
 101         {
 102                 std::string tip;
 103                 if(Widget *wdg = get_descendant_at(pointer_x, pointer_y))
 104                 {
 105                         tip = wdg->get_tooltip();
 106                         tooltip_target = wdg;
 107                 }
 108                 else
 109                 {
 110                         tip = signal_tooltip.emit(pointer_x, pointer_y);
 111                         tooltip_target = this;
 112                 }
 113
 114                 if(!tip.empty())
 115                 {
 116                         if(!lbl_tooltip)
 117                         {
 118                                 lbl_tooltip = new Label;
 119                                 add(*lbl_tooltip);
 120                                 lbl_tooltip->set_style("tooltip");
 121                         }
 122
 123                         lbl_tooltip->set_text(tip);
 124                         lbl_tooltip->autosize();
 125                         const Geometry &tip_geom = lbl_tooltip->get_geometry();
 126                         unsigned x = pointer_x+10;
 127                         unsigned y = pointer_y-10-lbl_tooltip->get_geometry().h;
 128                         if(x+tip_geom.w>geom.w)
 129                         {
 130                                 if(pointer_x>static_cast<int>(tip_geom.w+2))
 131                                         x = pointer_x-2-tip_geom.w;
 132                                 else
 133                                         x = geom.w-tip_geom.w;
 134                         }
 135                         lbl_tooltip->set_position(x, y);
 136                         raise(*lbl_tooltip);
 137                         lbl_tooltip->set_visible(true);
 138                 }
 139
 140                 tooltip_timeout = Time::TimeStamp();
 141         }
 142 }
 143
 144 void Root::render() const
 145 {
 146         GL::Bind bind_blend(GL::Blend::alpha());
 147
 148         GL::Renderer renderer(&camera);
 149         renderer.set_shader_program(shprog);
 150         Widget::render(renderer);
 151 }
 152
 153 void Root::render(GL::Renderer &renderer, const GL::Tag &tag) const
 154 {
 155         if(tag.id)
 156                 return;
 157
 158         GL::Renderer::Push push(renderer);
 159         renderer.set_camera(camera);
 160         renderer.set_shader_program(shprog);
 161         GL::BindRestore bind_blend(GL::Blend::alpha());
 162         GL::BindRestore unbind_dtest(static_cast<GL::DepthTest *>(0));
 163         Widget::render(renderer);
 164 }
 165
 166 bool Root::button_press_event(unsigned btn)
 167 {
 168         if(visible)
 169         {
 170                 Widget *old_focus = pointer_focus;
 171
 172                 int x, y;
 173                 get_pointer(x, y);
 174                 button_press(x, y, btn);
 175
 176                 if(pointer_focus || old_focus)
 177                         return true;
 178         }
 179
 180         return false;
 181 }
 182
 183 bool Root::button_release_event(unsigned btn)
 184 {
 185         if(visible)
 186         {
 187                 Widget *old_focus = pointer_focus;
 188
 189                 int x, y;
 190                 get_pointer(x, y);
 191                 button_release(x, y, btn);
 192
 193                 if(pointer_focus || old_focus)
 194                         return true;
 195         }
 196
 197         return false;
 198 }
 199
 200 bool Root::axis_motion_event(unsigned, float, float)
 201 {
 202         if(visible)
 203         {
 204                 int x, y;
 205                 get_pointer(x, y);
 206                 pointer_motion(x, y);
 207
 208                 if(!tooltip_target)
 209                 {
 210                         pointer_x = x;
 211                         pointer_y = y;
 212                         tooltip_timeout = Time::now()+700*Time::msec;
 213                 }
 214                 else if(get_descendant_at(x, y)!=tooltip_target)
 215                 {
 216                         if(lbl_tooltip)
 217                                 lbl_tooltip->set_visible(false);
 218                         tooltip_target = 0;
 219                 }
 220
 221                 if(pointer_focus)
 222                         return true;
 223         }
 224
 225         return false;
 226 }
 227
 228 bool Root::touch_press_event(unsigned finger)
 229 {
 230         if(visible)
 231         {
 232                 Widget *old_focus = touch_focus;
 233
 234                 int x, y;
 235                 get_touch(finger, x, y);
 236                 touch_press(x, y, finger);
 237
 238                 if(touch_focus || old_focus)
 239                         return true;
 240         }
 241
 242         return false;
 243 }
 244
 245 bool Root::touch_release_event(unsigned finger)
 246 {
 247         if(visible)
 248         {
 249                 Widget *old_focus = touch_focus;
 250
 251                 int x, y;
 252                 get_touch(finger, x, y);
 253                 touch_release(x, y, finger);
 254
 255                 if(touch_focus || old_focus)
 256                         return true;
 257         }
 258
 259         return false;
 260 }
 261
 262 bool Root::touch_motion_event(unsigned axis, float, float)
 263 {
 264         if(visible)
 265         {
 266                 unsigned finger = axis/2;
 267                 int x, y;
 268                 get_touch(finger, x, y);
 269                 touch_motion(x, y, finger);
 270
 271                 if(touch_focus)
 272                         return true;
 273         }
 274
 275         return false;
 276 }
 277
 278 void Root::get_pointer(int &x, int &y)
 279 {
 280         x = (mouse->get_axis_value(0)*0.5+0.5)*geom.w;
 281         y = (mouse->get_axis_value(1)*0.5+0.5)*geom.h;
 282 }
 283
 284 void Root::get_touch(unsigned finger, int &x, int &y)
 285 {
 286         x = (touchscreen->get_axis_value(finger*2)*0.5+0.5)*geom.w;
 287         y = (touchscreen->get_axis_value(finger*2+1)*0.5+0.5)*geom.h;
 288 }
 289
 290 void Root::update_camera()
 291 {
 292         camera.set_position(GL::Vector3(geom.w/2.0f, geom.h/2.0f, geom.h/2.0f));
 293         camera.set_depth_clip(geom.h*0.1f, geom.h*0.9f);
 294         camera.set_orthographic(geom.w, geom.h);
 295 }
 296
 297 void Root::on_geometry_change()
 298 {
 299         Panel::on_geometry_change();
 300         update_camera();
 301 }
 302
 303 void Root::on_child_added(Widget &wdg)
 304 {
 305         if(&wdg!=lbl_tooltip)
 306                 Panel::on_child_added(wdg);
 307 }
 308
 309 } // namespace GLtk
 310 } // namespace Msp