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, addItem, void(entity, entity, vector, vector, float))
   6         METHOD(ModalController, setFocus, void(entity, entity))
   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 drawModalController(entity me)
 130 {
 131         // TODO set up alpha, sizes and focus
 132         entity e;
 133         entity front;
 134         float animating;
 135         float f; // animation factor
 136         float df; // animation step size
 137         float prevFactor, targetFactor;
 138         vector targetOrigin, targetSize; float targetAlpha;
 139         animating = 0;
 140
 141         for(e = me.firstChild; e; e = e.Container_nextSibling)
 142                 if(e.ModalController_state)
 143                 {
 144                         if(front)
 145                                 me.switchState(me, front, 2, 0);
 146                         front = e;
 147                 }
 148         if(front)
 149                 me.switchState(me, front, 1, 0);
 150
 151         df = frametime * 3; // animation speed
 152
 153         for(e = me.firstChild; e; e = e.Container_nextSibling)
 154         {
 155                 f = (e.ModalController_factor = min(1, e.ModalController_factor + df));
 156                 if(e.ModalController_state)
 157                         if(f < 1)
 158                                 animating = 1;
 159
 160                 if(f < 1)
 161                 {
 162                         prevFactor   = (1 - f) / (1 - f + df);
 163                         targetFactor =     df  / (1 - f + df);
 164                 }
 165                 else
 166                 {
 167                         prevFactor = 0;
 168                         targetFactor = 1;
 169                 }
 170
 171                 if(e.ModalController_state == 2)
 172                 {
 173                         // fading out partially
 174                         targetOrigin = e.Container_origin; // stay as is
 175                         targetSize = e.Container_size; // stay as is
 176                         targetAlpha = me.fadedAlpha * e.ModalController_initialAlpha;
 177                 }
 178                 else if(e.ModalController_state == 1)
 179                 {
 180                         // zooming in
 181                         targetOrigin = e.ModalController_initialOrigin;
 182                         targetSize = e.ModalController_initialSize;
 183                         targetAlpha = e.ModalController_initialAlpha;
 184                 }
 185                 else
 186                 {
 187                         // fading out
 188                         if(f < 1)
 189                                 animating = 1;
 190                         targetOrigin = e.Container_origin; // stay as is
 191                         targetSize = e.Container_size; // stay as is
 192                         targetAlpha = 0;
 193                 }
 194
 195                 if(f == 1)
 196                 {
 197                         e.Container_origin = targetOrigin;
 198                         e.Container_size = targetSize;
 199                         e.Container_alpha = targetAlpha;
 200                 }
 201                 else
 202                 {
 203                         e.Container_origin = e.Container_origin * prevFactor + targetOrigin * targetFactor;
 204                         e.Container_size   = e.Container_size   * prevFactor + targetSize   * targetFactor;
 205                         e.Container_alpha  = e.Container_alpha  * prevFactor + targetAlpha  * targetFactor;
 206                 }
 207                 // assume: o == to * f_prev + X * (1 - f_prev)
 208                 // make:   o' = to * f  + X * (1 - f)
 209                 // -->
 210                 // X == (o - to * f_prev) / (1 - f_prev)
 211                 // o' = to * f + (o - to * f_prev) / (1 - f_prev) * (1 - f)
 212                 // --> (maxima)
 213                 // o' = (to * (f - f_prev) + o * (1 - f)) / (1 - f_prev)
 214         }
 215         if(animating)
 216                 me.focusedChild = NULL;
 217         else
 218                 me.focusedChild = front;
 219         drawContainer(me);
 220 };
 221
 222 void addTabModalController(entity me, entity other, entity tabButton)
 223 {
 224         me.addItem(me, other, '0 0 0', '1 1 1', 1);
 225         tabButton.onClick = TabButton_Click;
 226         tabButton.onClickEntity = other;
 227         if(other == me.firstChild)
 228         {
 229                 tabButton.forcePressed = 1;
 230                 other.ModalController_controllingButton = tabButton;
 231                 me.showChild(me, other, '0 0 0', '0 0 0', 1);
 232         }
 233 }
 234
 235 void addItemModalController(entity me, entity other, vector theOrigin, vector theSize, float theAlpha)
 236 {
 237         other.ModalController_initialSize = theSize;
 238         other.ModalController_initialOrigin = theOrigin;
 239         other.ModalController_initialAlpha = theAlpha;
 240         addItemContainer(me, other, theOrigin, theSize, theAlpha);
 241         if(other != me.firstChild)
 242                 other.Container_alpha = 0;
 243 }
 244
 245 void setFocusModalController(entity me, entity other)
 246 {
 247         error("Sorry, modal controllers can't handle setFocus");
 248 }
 249
 250 void showChildModalController(entity me, entity other, vector theOrigin, vector theSize, float skipAnimation)
 251 {
 252         if(other.ModalController_state == 0)
 253         {
 254                 me.focusedChild = NULL;
 255                 other.ModalController_buttonOrigin = globalToBox(theOrigin, me.origin, me.size);
 256                 other.ModalController_buttonSize = globalToBoxSize(theSize, me.size);
 257                 me.switchState(me, other, 1, skipAnimation);
 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.Container_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.focusedChild = 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