ui_shared.c

quakeIII源码这个不用我多说吧

	value = DC->getCVarValue(item->cvar);

	if (value < editDef->minVal) {
		value = editDef->minVal;
	} else if (value > editDef->maxVal) {
		value = editDef->maxVal;
	}

	range = editDef->maxVal - editDef->minVal;
	value -= editDef->minVal;
	value /= range;
	//value /= (editDef->maxVal - editDef->minVal);
	value *= SLIDER_WIDTH;
	x += value;
	// vm fuckage
	//x = x + (((float)value / editDef->maxVal) * SLIDER_WIDTH);
	return x;
}

int Item_Slider_OverSlider(itemDef_t *item, float x, float y) {
	rectDef_t r;

	r.x = Item_Slider_ThumbPosition(item) - (SLIDER_THUMB_WIDTH / 2);
	r.y = item->window.rect.y - 2;
	r.w = SLIDER_THUMB_WIDTH;
	r.h = SLIDER_THUMB_HEIGHT;

	if (Rect_ContainsPoint(&r, x, y)) {
		return WINDOW_LB_THUMB;
	}
	return 0;
}

int Item_ListBox_OverLB(itemDef_t *item, float x, float y) {
	rectDef_t r;
	listBoxDef_t *listPtr;
	int thumbstart;
	int count;

	count = DC->feederCount(item->special);
	listPtr = (listBoxDef_t*)item->typeData;
	if (item->window.flags & WINDOW_HORIZONTAL) {
		// check if on left arrow
		r.x = item->window.rect.x;
		r.y = item->window.rect.y + item->window.rect.h - SCROLLBAR_SIZE;
		r.h = r.w = SCROLLBAR_SIZE;
		if (Rect_ContainsPoint(&r, x, y)) {
			return WINDOW_LB_LEFTARROW;
		}
		// check if on right arrow
		r.x = item->window.rect.x + item->window.rect.w - SCROLLBAR_SIZE;
		if (Rect_ContainsPoint(&r, x, y)) {
			return WINDOW_LB_RIGHTARROW;
		}
		// check if on thumb
		thumbstart = Item_ListBox_ThumbPosition(item);
		r.x = thumbstart;
		if (Rect_ContainsPoint(&r, x, y)) {
			return WINDOW_LB_THUMB;
		}
		r.x = item->window.rect.x + SCROLLBAR_SIZE;
		r.w = thumbstart - r.x;
		if (Rect_ContainsPoint(&r, x, y)) {
			return WINDOW_LB_PGUP;
		}
		r.x = thumbstart + SCROLLBAR_SIZE;
		r.w = item->window.rect.x + item->window.rect.w - SCROLLBAR_SIZE;
		if (Rect_ContainsPoint(&r, x, y)) {
			return WINDOW_LB_PGDN;
		}
	} else {
		r.x = item->window.rect.x + item->window.rect.w - SCROLLBAR_SIZE;
		r.y = item->window.rect.y;
		r.h = r.w = SCROLLBAR_SIZE;
		if (Rect_ContainsPoint(&r, x, y)) {
			return WINDOW_LB_LEFTARROW;
		}
		r.y = item->window.rect.y + item->window.rect.h - SCROLLBAR_SIZE;
		if (Rect_ContainsPoint(&r, x, y)) {
			return WINDOW_LB_RIGHTARROW;
		}
		thumbstart = Item_ListBox_ThumbPosition(item);
		r.y = thumbstart;
		if (Rect_ContainsPoint(&r, x, y)) {
			return WINDOW_LB_THUMB;
		}
		r.y = item->window.rect.y + SCROLLBAR_SIZE;
		r.h = thumbstart - r.y;
		if (Rect_ContainsPoint(&r, x, y)) {
			return WINDOW_LB_PGUP;
		}
		r.y = thumbstart + SCROLLBAR_SIZE;
		r.h = item->window.rect.y + item->window.rect.h - SCROLLBAR_SIZE;
		if (Rect_ContainsPoint(&r, x, y)) {
			return WINDOW_LB_PGDN;
		}
	}
	return 0;
}


void Item_ListBox_MouseEnter(itemDef_t *item, float x, float y) 
{
	rectDef_t r;
	listBoxDef_t *listPtr = (listBoxDef_t*)item->typeData;
        
	item->window.flags &= ~(WINDOW_LB_LEFTARROW | WINDOW_LB_RIGHTARROW | WINDOW_LB_THUMB | WINDOW_LB_PGUP | WINDOW_LB_PGDN);
	item->window.flags |= Item_ListBox_OverLB(item, x, y);

	if (item->window.flags & WINDOW_HORIZONTAL) {
		if (!(item->window.flags & (WINDOW_LB_LEFTARROW | WINDOW_LB_RIGHTARROW | WINDOW_LB_THUMB | WINDOW_LB_PGUP | WINDOW_LB_PGDN))) {
			// check for selection hit as we have exausted buttons and thumb
			if (listPtr->elementStyle == LISTBOX_IMAGE) {
				r.x = item->window.rect.x;
				r.y = item->window.rect.y;
				r.h = item->window.rect.h - SCROLLBAR_SIZE;
				r.w = item->window.rect.w - listPtr->drawPadding;
				if (Rect_ContainsPoint(&r, x, y)) {
					listPtr->cursorPos =  (int)((x - r.x) / listPtr->elementWidth)  + listPtr->startPos;
					if (listPtr->cursorPos >= listPtr->endPos) {
						listPtr->cursorPos = listPtr->endPos;
					}
				}
			} else {
				// text hit.. 
			}
		}
	} else if (!(item->window.flags & (WINDOW_LB_LEFTARROW | WINDOW_LB_RIGHTARROW | WINDOW_LB_THUMB | WINDOW_LB_PGUP | WINDOW_LB_PGDN))) {
		r.x = item->window.rect.x;
		r.y = item->window.rect.y;
		r.w = item->window.rect.w - SCROLLBAR_SIZE;
		r.h = item->window.rect.h - listPtr->drawPadding;
		if (Rect_ContainsPoint(&r, x, y)) {
			listPtr->cursorPos =  (int)((y - 2 - r.y) / listPtr->elementHeight)  + listPtr->startPos;
			if (listPtr->cursorPos > listPtr->endPos) {
				listPtr->cursorPos = listPtr->endPos;
			}
		}
	}
}

void Item_MouseEnter(itemDef_t *item, float x, float y) {
	rectDef_t r;
	if (item) {
		r = item->textRect;
		r.y -= r.h;
		// in the text rect?

		// items can be enabled and disabled based on cvars
		if (item->cvarFlags & (CVAR_ENABLE | CVAR_DISABLE) && !Item_EnableShowViaCvar(item, CVAR_ENABLE)) {
			return;
		}

		if (item->cvarFlags & (CVAR_SHOW | CVAR_HIDE) && !Item_EnableShowViaCvar(item, CVAR_SHOW)) {
			return;
		}

		if (Rect_ContainsPoint(&r, x, y)) {
			if (!(item->window.flags & WINDOW_MOUSEOVERTEXT)) {
				Item_RunScript(item, item->mouseEnterText);
				item->window.flags |= WINDOW_MOUSEOVERTEXT;
			}
			if (!(item->window.flags & WINDOW_MOUSEOVER)) {
				Item_RunScript(item, item->mouseEnter);
				item->window.flags |= WINDOW_MOUSEOVER;
			}

		} else {
			// not in the text rect
			if (item->window.flags & WINDOW_MOUSEOVERTEXT) {
				// if we were
				Item_RunScript(item, item->mouseExitText);
				item->window.flags &= ~WINDOW_MOUSEOVERTEXT;
			}
			if (!(item->window.flags & WINDOW_MOUSEOVER)) {
				Item_RunScript(item, item->mouseEnter);
				item->window.flags |= WINDOW_MOUSEOVER;
			}

			if (item->type == ITEM_TYPE_LISTBOX) {
				Item_ListBox_MouseEnter(item, x, y);
			}
		}
	}
}

void Item_MouseLeave(itemDef_t *item) {
  if (item) {
    if (item->window.flags & WINDOW_MOUSEOVERTEXT) {
      Item_RunScript(item, item->mouseExitText);
      item->window.flags &= ~WINDOW_MOUSEOVERTEXT;
    }
    Item_RunScript(item, item->mouseExit);
    item->window.flags &= ~(WINDOW_LB_RIGHTARROW | WINDOW_LB_LEFTARROW);
  }
}

itemDef_t *Menu_HitTest(menuDef_t *menu, float x, float y) {
  int i;
  for (i = 0; i < menu->itemCount; i++) {
    if (Rect_ContainsPoint(&menu->items[i]->window.rect, x, y)) {
      return menu->items[i];
    }
  }
  return NULL;
}

void Item_SetMouseOver(itemDef_t *item, qboolean focus) {
  if (item) {
    if (focus) {
      item->window.flags |= WINDOW_MOUSEOVER;
    } else {
      item->window.flags &= ~WINDOW_MOUSEOVER;
    }
  }
}


qboolean Item_OwnerDraw_HandleKey(itemDef_t *item, int key) {
  if (item && DC->ownerDrawHandleKey) {
    return DC->ownerDrawHandleKey(item->window.ownerDraw, item->window.ownerDrawFlags, &item->special, key);
  }
  return qfalse;
}

qboolean Item_ListBox_HandleKey(itemDef_t *item, int key, qboolean down, qboolean force) {
	listBoxDef_t *listPtr = (listBoxDef_t*)item->typeData;
	int count = DC->feederCount(item->special);
	int max, viewmax;

	if (force || (Rect_ContainsPoint(&item->window.rect, DC->cursorx, DC->cursory) && item->window.flags & WINDOW_HASFOCUS)) {
		max = Item_ListBox_MaxScroll(item);
		if (item->window.flags & WINDOW_HORIZONTAL) {
			viewmax = (item->window.rect.w / listPtr->elementWidth);
			if ( key == K_LEFTARROW || key == K_KP_LEFTARROW ) 
			{
				if (!listPtr->notselectable) {
					listPtr->cursorPos--;
					if (listPtr->cursorPos < 0) {
						listPtr->cursorPos = 0;
					}
					if (listPtr->cursorPos < listPtr->startPos) {
						listPtr->startPos = listPtr->cursorPos;
					}
					if (listPtr->cursorPos >= listPtr->startPos + viewmax) {
						listPtr->startPos = listPtr->cursorPos - viewmax + 1;
					}
					item->cursorPos = listPtr->cursorPos;
					DC->feederSelection(item->special, item->cursorPos);
				}
				else {
					listPtr->startPos--;
					if (listPtr->startPos < 0)
						listPtr->startPos = 0;
				}
				return qtrue;
			}
			if ( key == K_RIGHTARROW || key == K_KP_RIGHTARROW ) 
			{
				if (!listPtr->notselectable) {
					listPtr->cursorPos++;
					if (listPtr->cursorPos < listPtr->startPos) {
						listPtr->startPos = listPtr->cursorPos;
					}
					if (listPtr->cursorPos >= count) {
						listPtr->cursorPos = count-1;
					}
					if (listPtr->cursorPos >= listPtr->startPos + viewmax) {
						listPtr->startPos = listPtr->cursorPos - viewmax + 1;
					}
					item->cursorPos = listPtr->cursorPos;
					DC->feederSelection(item->special, item->cursorPos);
				}
				else {
					listPtr->startPos++;
					if (listPtr->startPos >= count)
						listPtr->startPos = count-1;
				}
				return qtrue;
			}
		}
		else {
			viewmax = (item->window.rect.h / listPtr->elementHeight);
			if ( key == K_UPARROW || key == K_KP_UPARROW ) 
			{
				if (!listPtr->notselectable) {
					listPtr->cursorPos--;
					if (listPtr->cursorPos < 0) {
						listPtr->cursorPos = 0;
					}
					if (listPtr->cursorPos < listPtr->startPos) {
						listPtr->startPos = listPtr->cursorPos;
					}
					if (listPtr->cursorPos >= listPtr->startPos + viewmax) {
						listPtr->startPos = listPtr->cursorPos - viewmax + 1;
					}
					item->cursorPos = listPtr->cursorPos;
					DC->feederSelection(item->special, item->cursorPos);
				}
				else {
					listPtr->startPos--;
					if (listPtr->startPos < 0)
						listPtr->startPos = 0;
				}
				return qtrue;
			}
			if ( key == K_DOWNARROW || key == K_KP_DOWNARROW ) 
			{
				if (!listPtr->notselectable) {
					listPtr->cursorPos++;
					if (listPtr->cursorPos < listPtr->startPos) {
						listPtr->startPos = listPtr->cursorPos;
					}
					if (listPtr->cursorPos >= count) {
						listPtr->cursorPos = count-1;
					}
					if (listPtr->cursorPos >= listPtr->startPos + viewmax) {
						listPtr->startPos = listPtr->cursorPos - viewmax + 1;
					}
					item->cursorPos = listPtr->cursorPos;
					DC->feederSelection(item->special, item->cursorPos);
				}
				else {
					listPtr->startPos++;
					if (listPtr->startPos > max)
						listPtr->startPos = max;
				}
				return qtrue;
			}
		}
		// mouse hit
		if (key == K_MOUSE1 || key == K_MOUSE2) {
			if (item->window.flags & WINDOW_LB_LEFTARROW) {
				listPtr->startPos--;
				if (listPtr->startPos < 0) {
					listPtr->startPos = 0;
				}
			} else if (item->window.flags & WINDOW_LB_RIGHTARROW) {
				// one down
				listPtr->startPos++;
				if (listPtr->startPos > max) {
					listPtr->startPos = max;
				}
			} else if (item->window.flags & WINDOW_LB_PGUP) {
				// page up
				listPtr->startPos -= viewmax;
				if (listPtr->startPos < 0) {
					listPtr->startPos = 0;
				}
			} else if (item->window.flags & WINDOW_LB_PGDN) {
				// page down
				listPtr->startPos += viewmax;
				if (listPtr->startPos > max) {
					listPtr->startPos = max;
				}
			} else if (item->window.flags & WINDOW_LB_THUMB) {
				// Display_SetCaptureItem(item);
			} else {
				// select an item
				if (DC->realTime < lastListBoxClickTime && listPtr->doubleClick) {
					Item_RunScript(item, listPtr->doubleClick);
				}
				lastListBoxClickTime = DC->realTime + DOUBLE_CLICK_DELAY;
				if (item->cursorPos != listPtr->cursorPos) {
					item->cursorPos = listPtr->cursorPos;
					DC->feederSelection(item->special, item->cursorPos);
				}
			}
			return qtrue;
		}
		if ( key == K_HOME || key == K_KP_HOME) {
			// home
			listPtr->startPos = 0;
			return qtrue;
		}
		if ( key == K_END || key == K_KP_END) {
			// end
			listPtr->startPos = max;
			return qtrue;
		}
		if (key == K_PGUP || key == K_KP_PGUP ) {
			// page up
			if (!listPtr->notselectable) {
				listPtr->cursorPos -= viewmax;
				if (listPtr->cursorPos < 0) {
					listPtr->cursorPos = 0;
				}
				if (listPtr->cursorPos < listPtr->startPos) {
					listPtr->startPos = listPtr->cursorPos;
				}
				if (listPtr->cursorPos >= listPtr->startPos + viewmax) {
					listPtr->startPos = listPtr->cursorPos - viewmax + 1;
				}
				item->cursorPos = listPtr->cursorPos;
				DC->feederSelection(item->special, item->cursorPos);
			}
			else {
				listPtr->startPos -= viewmax;
				if (listPtr->startPos < 0) {
					listPtr->startPos = 0;
				}
			}
			return qtrue;
		}
		if ( key == K_PGDN || key == K_KP_PGDN ) {
			// page down
			if (!listPtr->notselectable) {
				listPtr->cursorPos += viewmax;
				if (listPtr->cursorPos < listPtr->startPos) {
					listPtr->startPos = listPtr->cursorPos;
				}
				if (listPtr->cursorPos >= count) {
					listPtr->cursorPos = count-1;
				}
				if (listPtr->cursorPos >= listPtr->startPos + viewmax) {
					listPtr->startPos = listPtr->cursorPos - viewmax + 1;
				}
				item->cursorPos = listPtr->cursorPos;
				DC->feederSelection(item->special, item->cursorPos);
			}
			else {
				listPtr->startPos += viewmax;
				if (listPtr->startPos > max) {
					listPtr->startPos = max;
				}
			}
			return qtrue;
		}
	}
	return qfalse;
}

qboolean Item_YesNo_HandleKey(itemDef_t *item, int key) {

  if (Rect_ContainsPoint(&item->window.rect, DC->cursorx, DC->cursory) && item->window.flags & WINDOW_HASFOCUS && item->cvar) {
		if (key == K_MOUSE1 || key == K_ENTER || key == K_MOUSE2 || key == K_MOUSE3) {
	    DC->setCVar(item->cvar, va("%i", !DC->getCVarValue(item->cvar)));
		  return qtrue;
		}
  }

  return qfalse;

}

int Item_Multi_CountSettings(itemDef_t *item) {
	multiDef_t *multiPtr = (multiDef_t*)item->typeData;
	if (multiPtr == NULL) {
		return 0;
	}
	return multiPtr->count;
}

int Item_Multi_FindCvarByValue(itemDef_t *item) {
	char buff[1024];
	float value = 0;
	int i;
	multiDef_t *multiPtr = (multiDef_t*)item->typeData;
	if (multiPtr) {
		if (multiPtr->strDef) {
	    DC->getCVarString(item->cvar, buff, sizeof(buff));
		} else {
			value = DC->getCVarValue(item->cvar);
		}
		for (i = 0; i < multiPtr->count; i++) {
			if (multiPtr->strDef) {
				if (Q_stricmp(buff, multiPtr->cvarStr[i]) == 0) {
					return i;
				}
			} else {
 				if (multiPtr->cvarValue[i] == value) {
 					return i;
 				}
 			}
 		}
	}
	return 0;
}

const char *Item_Multi_Setting(itemDef_t *item) {
	char buff[1024];
	float value = 0;
	int i;
	multiDef_t *multiPtr = (multiDef_t*)item->typeData;
	if (multiPtr) {
		if (multiPtr->strDef) {
	    DC->getCVarString(item->cvar, buff, sizeof(buff));
		} else {
			value = DC->getCVarValue(item->cvar);
		}
		for (i = 0; i < multiPtr->count; i++) {
			if (multiPtr->strDef) {
				if (Q_stricmp(buff, multiPtr->cvarStr[i]) == 0) {
					return multiPtr->cvarList[i];
				}
			} else {
 				if (multiPtr->cvarValue[i] == value) {