data/qcsrc/menu-div0test/item/modalcontroller.c

   1 #ifdef INTERFACE
   2 CLASS(ModalController) EXTENDS(Container)
   3         METHOD(ModalController, resizeNotify, void(entity, vector, vector, vector, vector))
   4         METHOD(ModalController, draw, void(entity))
   5         METHOD(ModalController, open, void(entity))
   6         METHOD(ModalController, addItem, void(entity, entity, vector, vector, float))
   7         METHOD(ModalController, showChild, void(entity, entity, vector, vector, float))
   8         METHOD(ModalController, hideChild, void(entity, entity, float))
   9         METHOD(ModalController, hideAll, void(entity, float))
  10         METHOD(ModalController, addItem, void(entity, entity, vector, vector, float))
  11         METHOD(ModalController, addTab, void(entity, entity, entity))
  12
  13         METHOD(ModalController, initializeDialog, void(entity, entity))
  14
  15         METHOD(ModalController, switchState, void(entity, entity, float, float))
  16         ATTRIB(ModalController, origin, vector, '0 0 0')
  17         ATTRIB(ModalController, size, vector, '0 0 0')
  18         ATTRIB(ModalController, previousButton, entity, NULL)
  19         ATTRIB(ModalController, fadedAlpha, float, 0.3)
  20 ENDCLASS(ModalController)
  21
  22 .vector origin;
  23 .vector size;
  24 void TabButton_Click(entity button, entity tab); // assumes a button has set the above fields to its own absolute origin, its size, and the tab to activate
  25 void DialogOpenButton_Click(entity button, entity tab); // assumes a button has set the above fields to its own absolute origin, its size, and the tab to activate
  26 void DialogCloseButton_Click(entity button, entity tab); // assumes a button has set the above fields to the tab to close
  27 #endif
  28
  29 #ifdef IMPLEMENTATION
  30
  31 // modal dialog controller
  32 // handles a stack of dialog elements
  33 // each element can have one of the following states:
  34 //   0: hidden (fading out)
  35 //   1: visible (zooming in)
  36 //   2: greyed out (inactive)
  37 // While an animation is running, no item has focus. When an animation is done,
  38 // the topmost item gets focus.
  39 // The items are assumed to be added in overlapping order, that is, the lowest
  40 // window must get added first.
  41 //
  42 // Possible uses:
  43 // - to control a modal dialog:
  44 //   - show modal dialog: me.showChild(me, childItem, buttonAbsOrigin, buttonAbsSize, 0) // childItem also gets focus
  45 //   - dismiss modal dialog: me.hideChild(me, childItem, 0) // childItem fades out and relinquishes focus
  46 //   - show first screen in m_show: me.hideAll(me, 1); me.showChild(me, me.firstChild, '0 0 0', '0 0 0', 1);
  47 // - to show a temporary dialog instead of the menu (teamselect): me.hideAll(me, 1); me.showChild(me, teamSelectDialog, '0 0 0', '0 0 0', 1);
  48 // - as a tabbed dialog control:
  49 //   - to initialize: me.hideAll(me, 1); me.showChild(me, me.firstChild, '0 0 0', '0 0 0', 1);
  50 //   - to show a tab: me.hideChild(me, currentTab, 0); me.showChild(me, newTab, buttonAbsOrigin, buttonAbsSize, 0);
  51
  52 .vector ModalController_initialSize;
  53 .vector ModalController_initialOrigin;
  54 .float ModalController_initialAlpha;
  55 .vector ModalController_buttonSize;
  56 .vector ModalController_buttonOrigin;
  57 .float ModalController_state;
  58 .float ModalController_factor;
  59 .entity ModalController_controllingButton;
  60
  61 void initializeDialogModalController(entity me, entity root)
  62 {
  63         me.hideAll(me, 1);
  64         me.showChild(me, root, '0 0 0', '0 0 0', 1); // someone else animates for us
  65 }
  66
  67 void TabButton_Click(entity button, entity tab)
  68 {
  69         if(tab.ModalController_state == 1)
  70                 return;
  71         tab.parent.hideAll(tab.parent, 0);
  72         button.forcePressed = 1;
  73         tab.ModalController_controllingButton = button;
  74         tab.parent.showChild(tab.parent, tab, button.origin, button.size, 0);
  75 }
  76
  77 void DialogOpenButton_Click(entity button, entity tab)
  78 {
  79         if(tab.ModalController_state)
  80                 return;
  81         button.forcePressed = 1;
  82         tab.ModalController_controllingButton = button;
  83         tab.parent.showChild(tab.parent, tab, button.origin, button.size, 0);
  84 }
  85
  86 void DialogCloseButton_Click(entity button, entity tab)
  87 {
  88         tab.parent.hideChild(tab.parent, tab, 0);
  89 }
  90
  91 void resizeNotifyModalController(entity me, vector relOrigin, vector relSize, vector absOrigin, vector absSize)
  92 {
  93         me.origin = absOrigin;
  94         me.size = absSize;
  95         me.resizeNotifyLie(me, relOrigin, relSize, absOrigin, absSize, ModalController_initialOrigin, ModalController_initialSize);
  96 }
  97
  98 void switchStateModalController(entity me, entity other, float state, float skipAnimation)
  99 {
 100         float previousState;
 101         previousState = other.ModalController_state;
 102         if(state == previousState)
 103                 return;
 104         other.ModalController_state = state;
 105         switch(state)
 106         {
 107                 case 0:
 108                         other.ModalController_factor = 1 - other.Container_alpha / other.ModalController_initialAlpha;
 109                         // fading out
 110                         break;
 111                 case 1:
 112                         other.ModalController_factor = other.Container_alpha / other.ModalController_initialAlpha;
 113                         if(previousState == 0 && !skipAnimation)
 114                         {
 115                                 other.Container_origin = other.ModalController_buttonOrigin;
 116                                 other.Container_size = other.ModalController_buttonSize;
 117                         }
 118                         // zooming in
 119                         break;
 120                 case 2:
 121                         other.ModalController_factor = bound(0, (1 - other.Container_alpha / other.ModalController_initialAlpha) / me.fadedAlpha, 1);
 122                         // fading out halfway
 123                         break;
 124         }
 125         if(skipAnimation)
 126                 other.ModalController_factor = 1;
 127 }
 128
 129 void openModalController(entity me)
 130 {
 131         // just swallow the event; will handle opening another way
 132 }
 133
 134 void drawModalController(entity me)
 135 {
 136         entity e;
 137         entity front;
 138         float animating;
 139         float f; // animation factor
 140         float df; // animation step size
 141         float prevFactor, targetFactor;
 142         vector targetOrigin, targetSize; float targetAlpha;
 143         animating = 0;
 144
 145         for(e = me.firstChild; e; e = e.nextSibling)
 146                 if(e.ModalController_state)
 147                 {
 148                         if(front)
 149                                 me.switchState(me, front, 2, 0);
 150                         front = e;
 151                 }
 152         if(front)
 153                 me.switchState(me, front, 1, 0);
 154
 155         df = frametime * 3; // animation speed
 156
 157         for(e = me.firstChild; e; e = e.nextSibling)
 158         {
 159                 f = (e.ModalController_factor = min(1, e.ModalController_factor + df));
 160                 if(e.ModalController_state)
 161                         if(f < 1)
 162                                 animating = 1;
 163
 164                 if(f < 1)
 165                 {
 166                         prevFactor   = (1 - f) / (1 - f + df);
 167                         targetFactor =     df  / (1 - f + df);
 168                 }
 169                 else
 170                 {
 171                         prevFactor = 0;
 172                         targetFactor = 1;
 173                 }
 174
 175                 if(e.ModalController_state == 2)
 176                 {
 177                         // fading out partially
 178                         targetOrigin = e.Container_origin; // stay as is
 179                         targetSize = e.Container_size; // stay as is
 180                         targetAlpha = me.fadedAlpha * e.ModalController_initialAlpha;
 181                 }
 182                 else if(e.ModalController_state == 1)
 183                 {
 184                         // zooming in
 185                         targetOrigin = e.ModalController_initialOrigin;
 186                         targetSize = e.ModalController_initialSize;
 187                         targetAlpha = e.ModalController_initialAlpha;
 188                 }
 189                 else
 190                 {
 191                         // fading out
 192                         if(f < 1)
 193                                 animating = 1;
 194                         targetOrigin = e.Container_origin; // stay as is
 195                         targetSize = e.Container_size; // stay as is
 196                         targetAlpha = 0;
 197                 }
 198
 199                 if(f == 1)
 200                 {
 201                         e.Container_origin = targetOrigin;
 202                         e.Container_size = targetSize;
 203                         e.Container_alpha = targetAlpha;
 204                 }
 205                 else
 206                 {
 207                         e.Container_origin = e.Container_origin * prevFactor + targetOrigin * targetFactor;
 208                         e.Container_size   = e.Container_size   * prevFactor + targetSize   * targetFactor;
 209                         e.Container_alpha  = e.Container_alpha  * prevFactor + targetAlpha  * targetFactor;
 210                 }
 211                 // assume: o == to * f_prev + X * (1 - f_prev)
 212                 // make:   o' = to * f  + X * (1 - f)
 213                 // -->
 214                 // X == (o - to * f_prev) / (1 - f_prev)
 215                 // o' = to * f + (o - to * f_prev) / (1 - f_prev) * (1 - f)
 216                 // --> (maxima)
 217                 // o' = (to * (f - f_prev) + o * (1 - f)) / (1 - f_prev)
 218         }
 219         if(animating || !me.focused)
 220                 me.setFocus(me, NULL);
 221         else
 222                 me.setFocus(me, front);
 223         drawContainer(me);
 224 };
 225
 226 void addTabModalController(entity me, entity other, entity tabButton)
 227 {
 228         me.addItem(me, other, '0 0 0', '1 1 1', 1);
 229         tabButton.onClick = TabButton_Click;
 230         tabButton.onClickEntity = other;
 231         if(other == me.firstChild)
 232         {
 233                 tabButton.forcePressed = 1;
 234                 other.ModalController_controllingButton = tabButton;
 235                 me.showChild(me, other, '0 0 0', '0 0 0', 1);
 236         }
 237 }
 238
 239 void addItemModalController(entity me, entity other, vector theOrigin, vector theSize, float theAlpha)
 240 {
 241         other.ModalController_initialSize = theSize;
 242         other.ModalController_initialOrigin = theOrigin;
 243         other.ModalController_initialAlpha = theAlpha;
 244         addItemContainer(me, other, theOrigin, theSize, theAlpha);
 245         if(other != me.firstChild)
 246                 other.Container_alpha = 0;
 247 }
 248
 249 void showChildModalController(entity me, entity other, vector theOrigin, vector theSize, float skipAnimation)
 250 {
 251         if(other.ModalController_state == 0)
 252         {
 253                 me.setFocus(me, NULL);
 254                 other.ModalController_buttonOrigin = globalToBox(theOrigin, me.origin, me.size);
 255                 other.ModalController_buttonSize = globalToBoxSize(theSize, me.size);
 256                 me.switchState(me, other, 1, skipAnimation);
 257                 other.open(other);
 258         } // zoom in from button (factor increases)
 259 }
 260
 261 void hideAllModalController(entity me, float skipAnimation)
 262 {
 263         entity e;
 264         for(e = me.firstChild; e; e = e.nextSibling)
 265                 me.hideChild(me, e, skipAnimation);
 266 }
 267
 268 void hideChildModalController(entity me, entity other, float skipAnimation)
 269 {
 270         if(other.ModalController_state)
 271         {
 272                 me.setFocus(me, NULL);
 273                 me.switchState(me, other, 0, skipAnimation);
 274                 if(other.ModalController_controllingButton)
 275                 {
 276                         other.ModalController_controllingButton.forcePressed = 0;
 277                         other.ModalController_controllingButton = NULL;
 278                 }
 279         } // just alpha fade out (factor increases and decreases alpha)
 280 }
 281 #endif