source/root.cpp

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