src/gui/guiButton.cpp

   1 // Copyright (C) 2002-2012 Nikolaus Gebhardt\r
   2 // This file is part of the "Irrlicht Engine".\r
   3 // For conditions of distribution and use, see copyright notice in irrlicht.h\r
   4 \r
   5 #include "guiButton.h"\r
   6 \r
   7 \r
   8 #include "client/guiscalingfilter.h"\r
   9 #include "client/tile.h"\r
  10 #include "IGUISkin.h"\r
  11 #include "IGUIEnvironment.h"\r
  12 #include "IVideoDriver.h"\r
  13 #include "IGUIFont.h"\r
  14 #include "irrlicht_changes/static_text.h"\r
  15 #include "porting.h"\r
  16 #include "StyleSpec.h"\r
  17 #include "util/numeric.h"\r
  18 \r
  19 using namespace irr;\r
  20 using namespace gui;\r
  21 \r
  22 // Multiply with a color to get the default corresponding hovered color\r
  23 #define COLOR_HOVERED_MOD 1.25f\r
  24 \r
  25 // Multiply with a color to get the default corresponding pressed color\r
  26 #define COLOR_PRESSED_MOD 0.85f\r
  27 \r
  28 //! constructor\r
  29 GUIButton::GUIButton(IGUIEnvironment* environment, IGUIElement* parent,\r
  30                         s32 id, core::rect<s32> rectangle, ISimpleTextureSource *tsrc,\r
  31                         bool noclip)\r
  32 : IGUIButton(environment, parent, id, rectangle),\r
  33         SpriteBank(0), OverrideFont(0),\r
  34         OverrideColorEnabled(false), OverrideColor(video::SColor(101,255,255,255)),\r
  35         ClickTime(0), HoverTime(0), FocusTime(0),\r
  36         ClickShiftState(false), ClickControlState(false),\r
  37         IsPushButton(false), Pressed(false),\r
  38         UseAlphaChannel(false), DrawBorder(true), ScaleImage(false), TSrc(tsrc)\r
  39 {\r
  40         setNotClipped(noclip);\r
  41 \r
  42         // This element can be tabbed.\r
  43         setTabStop(true);\r
  44         setTabOrder(-1);\r
  45 \r
  46         // PATCH\r
  47         for (size_t i = 0; i < 4; i++) {\r
  48                 Colors[i] = Environment->getSkin()->getColor((EGUI_DEFAULT_COLOR)i);\r
  49         }\r
  50         StaticText = gui::StaticText::add(Environment, Text.c_str(), core::rect<s32>(0,0,rectangle.getWidth(),rectangle.getHeight()), false, false, this, id);\r
  51         StaticText->setTextAlignment(EGUIA_CENTER, EGUIA_CENTER);\r
  52         // END PATCH\r
  53 }\r
  54 \r
  55 //! destructor\r
  56 GUIButton::~GUIButton()\r
  57 {\r
  58         if (OverrideFont)\r
  59                 OverrideFont->drop();\r
  60 \r
  61         if (SpriteBank)\r
  62                 SpriteBank->drop();\r
  63 }\r
  64 \r
  65 \r
  66 //! Sets if the images should be scaled to fit the button\r
  67 void GUIButton::setScaleImage(bool scaleImage)\r
  68 {\r
  69         ScaleImage = scaleImage;\r
  70 }\r
  71 \r
  72 \r
  73 //! Returns whether the button scale the used images\r
  74 bool GUIButton::isScalingImage() const\r
  75 {\r
  76         return ScaleImage;\r
  77 }\r
  78 \r
  79 \r
  80 //! Sets if the button should use the skin to draw its border\r
  81 void GUIButton::setDrawBorder(bool border)\r
  82 {\r
  83         DrawBorder = border;\r
  84 }\r
  85 \r
  86 \r
  87 void GUIButton::setSpriteBank(IGUISpriteBank* sprites)\r
  88 {\r
  89         if (sprites)\r
  90                 sprites->grab();\r
  91 \r
  92         if (SpriteBank)\r
  93                 SpriteBank->drop();\r
  94 \r
  95         SpriteBank = sprites;\r
  96 }\r
  97 \r
  98 void GUIButton::setSprite(EGUI_BUTTON_STATE state, s32 index, video::SColor color, bool loop, bool scale)\r
  99 {\r
 100         ButtonSprites[(u32)state].Index = index;\r
 101         ButtonSprites[(u32)state].Color = color;\r
 102         ButtonSprites[(u32)state].Loop  = loop;\r
 103         ButtonSprites[(u32)state].Scale = scale;\r
 104 }\r
 105 \r
 106 //! Get the sprite-index for the given state or -1 when no sprite is set\r
 107 s32 GUIButton::getSpriteIndex(EGUI_BUTTON_STATE state) const\r
 108 {\r
 109         return ButtonSprites[(u32)state].Index;\r
 110 }\r
 111 \r
 112 //! Get the sprite color for the given state. Color is only used when a sprite is set.\r
 113 video::SColor GUIButton::getSpriteColor(EGUI_BUTTON_STATE state) const\r
 114 {\r
 115         return ButtonSprites[(u32)state].Color;\r
 116 }\r
 117 \r
 118 //! Returns if the sprite in the given state does loop\r
 119 bool GUIButton::getSpriteLoop(EGUI_BUTTON_STATE state) const\r
 120 {\r
 121         return ButtonSprites[(u32)state].Loop;\r
 122 }\r
 123 \r
 124 //! Returns if the sprite in the given state is scaled\r
 125 bool GUIButton::getSpriteScale(EGUI_BUTTON_STATE state) const\r
 126 {\r
 127         return ButtonSprites[(u32)state].Scale;\r
 128 }\r
 129 \r
 130 //! called if an event happened.\r
 131 bool GUIButton::OnEvent(const SEvent& event)\r
 132 {\r
 133         if (!isEnabled())\r
 134                 return IGUIElement::OnEvent(event);\r
 135 \r
 136         switch(event.EventType)\r
 137         {\r
 138         case EET_KEY_INPUT_EVENT:\r
 139                 if (event.KeyInput.PressedDown &&\r
 140                         (event.KeyInput.Key == KEY_RETURN || event.KeyInput.Key == KEY_SPACE))\r
 141                 {\r
 142                         if (!IsPushButton)\r
 143                                 setPressed(true);\r
 144                         else\r
 145                                 setPressed(!Pressed);\r
 146 \r
 147                         return true;\r
 148                 }\r
 149                 if (Pressed && !IsPushButton && event.KeyInput.PressedDown && event.KeyInput.Key == KEY_ESCAPE)\r
 150                 {\r
 151                         setPressed(false);\r
 152                         return true;\r
 153                 }\r
 154                 else\r
 155                 if (!event.KeyInput.PressedDown && Pressed &&\r
 156                         (event.KeyInput.Key == KEY_RETURN || event.KeyInput.Key == KEY_SPACE))\r
 157                 {\r
 158 \r
 159                         if (!IsPushButton)\r
 160                                 setPressed(false);\r
 161 \r
 162                         if (Parent)\r
 163                         {\r
 164                                 ClickShiftState = event.KeyInput.Shift;\r
 165                                 ClickControlState = event.KeyInput.Control;\r
 166 \r
 167                                 SEvent newEvent;\r
 168                                 newEvent.EventType = EET_GUI_EVENT;\r
 169                                 newEvent.GUIEvent.Caller = this;\r
 170                                 newEvent.GUIEvent.Element = 0;\r
 171                                 newEvent.GUIEvent.EventType = EGET_BUTTON_CLICKED;\r
 172                                 Parent->OnEvent(newEvent);\r
 173                         }\r
 174                         return true;\r
 175                 }\r
 176                 break;\r
 177         case EET_GUI_EVENT:\r
 178                 if (event.GUIEvent.Caller == this)\r
 179                 {\r
 180                         if (event.GUIEvent.EventType == EGET_ELEMENT_FOCUS_LOST)\r
 181                         {\r
 182                                 if (!IsPushButton)\r
 183                                         setPressed(false);\r
 184                                 FocusTime = (u32)porting::getTimeMs();\r
 185                         }\r
 186                         else if (event.GUIEvent.EventType == EGET_ELEMENT_FOCUSED)\r
 187                         {\r
 188                                 FocusTime = (u32)porting::getTimeMs();\r
 189                         }\r
 190                         else if (event.GUIEvent.EventType == EGET_ELEMENT_HOVERED || event.GUIEvent.EventType == EGET_ELEMENT_LEFT)\r
 191                         {\r
 192                                 HoverTime = (u32)porting::getTimeMs();\r
 193                         }\r
 194                 }\r
 195                 break;\r
 196         case EET_MOUSE_INPUT_EVENT:\r
 197                 if (event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN)\r
 198                 {\r
 199                         // Sometimes formspec elements can receive mouse events when the\r
 200                         // mouse is outside of the formspec. Thus, we test the position here.\r
 201                         if ( !IsPushButton && AbsoluteClippingRect.isPointInside(\r
 202                                                 core::position2d<s32>(event.MouseInput.X, event.MouseInput.Y ))) {\r
 203                                 setPressed(true);\r
 204                         }\r
 205 \r
 206                         return true;\r
 207                 }\r
 208                 else\r
 209                 if (event.MouseInput.Event == EMIE_LMOUSE_LEFT_UP)\r
 210                 {\r
 211                         bool wasPressed = Pressed;\r
 212 \r
 213                         if ( !AbsoluteClippingRect.isPointInside( core::position2d<s32>(event.MouseInput.X, event.MouseInput.Y ) ) )\r
 214                         {\r
 215                                 if (!IsPushButton)\r
 216                                         setPressed(false);\r
 217                                 return true;\r
 218                         }\r
 219 \r
 220                         if (!IsPushButton)\r
 221                                 setPressed(false);\r
 222                         else\r
 223                         {\r
 224                                 setPressed(!Pressed);\r
 225                         }\r
 226 \r
 227                         if ((!IsPushButton && wasPressed && Parent) ||\r
 228                                 (IsPushButton && wasPressed != Pressed))\r
 229                         {\r
 230                                 ClickShiftState = event.MouseInput.Shift;\r
 231                                 ClickControlState = event.MouseInput.Control;\r
 232 \r
 233                                 SEvent newEvent;\r
 234                                 newEvent.EventType = EET_GUI_EVENT;\r
 235                                 newEvent.GUIEvent.Caller = this;\r
 236                                 newEvent.GUIEvent.Element = 0;\r
 237                                 newEvent.GUIEvent.EventType = EGET_BUTTON_CLICKED;\r
 238                                 Parent->OnEvent(newEvent);\r
 239                         }\r
 240 \r
 241                         return true;\r
 242                 }\r
 243                 break;\r
 244         default:\r
 245                 break;\r
 246         }\r
 247 \r
 248         return Parent ? Parent->OnEvent(event) : false;\r
 249 }\r
 250 \r
 251 \r
 252 //! draws the element and its children\r
 253 void GUIButton::draw()\r
 254 {\r
 255         if (!IsVisible)\r
 256                 return;\r
 257 \r
 258         // PATCH\r
 259         // Track hovered state, if it has changed then we need to update the style.\r
 260         bool hovered = isHovered();\r
 261         if (hovered != WasHovered) {\r
 262                 WasHovered = hovered;\r
 263                 setFromState();\r
 264         }\r
 265 \r
 266         GUISkin* skin = dynamic_cast<GUISkin*>(Environment->getSkin());\r
 267         video::IVideoDriver* driver = Environment->getVideoDriver();\r
 268         // END PATCH\r
 269 \r
 270         if (DrawBorder)\r
 271         {\r
 272                 if (!Pressed)\r
 273                 {\r
 274                         // PATCH\r
 275                         skin->drawColored3DButtonPaneStandard(this, AbsoluteRect,\r
 276                                         &AbsoluteClippingRect, Colors);\r
 277                         // END PATCH\r
 278                 }\r
 279                 else\r
 280                 {\r
 281                         // PATCH\r
 282                         skin->drawColored3DButtonPanePressed(this, AbsoluteRect,\r
 283                                         &AbsoluteClippingRect, Colors);\r
 284                         // END PATCH\r
 285                 }\r
 286         }\r
 287 \r
 288         const core::position2di buttonCenter(AbsoluteRect.getCenter());\r
 289         // PATCH\r
 290         // The image changes based on the state, so we use the default every time.\r
 291         EGUI_BUTTON_IMAGE_STATE imageState = EGBIS_IMAGE_UP;\r
 292         // END PATCH\r
 293         if ( ButtonImages[(u32)imageState].Texture )\r
 294         {\r
 295                 core::position2d<s32> pos(buttonCenter);\r
 296                 core::rect<s32> sourceRect(ButtonImages[(u32)imageState].SourceRect);\r
 297                 if ( sourceRect.getWidth() == 0 && sourceRect.getHeight() == 0 )\r
 298                         sourceRect = core::rect<s32>(core::position2di(0,0), ButtonImages[(u32)imageState].Texture->getOriginalSize());\r
 299 \r
 300                 pos.X -= sourceRect.getWidth() / 2;\r
 301                 pos.Y -= sourceRect.getHeight() / 2;\r
 302 \r
 303                 if ( Pressed )\r
 304                 {\r
 305                         // Create a pressed-down effect by moving the image when it looks identical to the unpressed state image\r
 306                         EGUI_BUTTON_IMAGE_STATE unpressedState = getImageState(false);\r
 307                         if ( unpressedState == imageState || ButtonImages[(u32)imageState] == ButtonImages[(u32)unpressedState] )\r
 308                         {\r
 309                                 pos.X += skin->getSize(EGDS_BUTTON_PRESSED_IMAGE_OFFSET_X);\r
 310                                 pos.Y += skin->getSize(EGDS_BUTTON_PRESSED_IMAGE_OFFSET_Y);\r
 311                         }\r
 312                 }\r
 313 \r
 314                 // PATCH\r
 315                 video::ITexture* texture = ButtonImages[(u32)imageState].Texture;\r
 316                 video::SColor image_colors[] = { BgColor, BgColor, BgColor, BgColor };\r
 317                 if (BgMiddle.getArea() == 0) {\r
 318                         driver->draw2DImage(texture,\r
 319                                         ScaleImage? AbsoluteRect : core::rect<s32>(pos, sourceRect.getSize()),\r
 320                                         sourceRect, &AbsoluteClippingRect,\r
 321                                         image_colors, UseAlphaChannel);\r
 322                 } else {\r
 323                         core::rect<s32> middle = BgMiddle;\r
 324                         // `-x` is interpreted as `w - x`\r
 325                         if (middle.LowerRightCorner.X < 0)\r
 326                                 middle.LowerRightCorner.X += texture->getOriginalSize().Width;\r
 327                         if (middle.LowerRightCorner.Y < 0)\r
 328                                 middle.LowerRightCorner.Y += texture->getOriginalSize().Height;\r
 329                         draw2DImage9Slice(driver, texture,\r
 330                                         ScaleImage ? AbsoluteRect : core::rect<s32>(pos, sourceRect.getSize()),\r
 331                                         middle, &AbsoluteClippingRect, image_colors);\r
 332                 }\r
 333                 // END PATCH\r
 334         }\r
 335 \r
 336         if (SpriteBank)\r
 337         {\r
 338                 core::position2di pos(buttonCenter);\r
 339 \r
 340                 if (isEnabled())\r
 341                 {\r
 342                         // pressed / unpressed animation\r
 343                         EGUI_BUTTON_STATE state = Pressed ? EGBS_BUTTON_DOWN : EGBS_BUTTON_UP;\r
 344                         drawSprite(state, ClickTime, pos);\r
 345 \r
 346                         // focused / unfocused animation\r
 347                         state = Environment->hasFocus(this) ? EGBS_BUTTON_FOCUSED : EGBS_BUTTON_NOT_FOCUSED;\r
 348                         drawSprite(state, FocusTime, pos);\r
 349 \r
 350                         // mouse over / off animation\r
 351                         state = isHovered() ? EGBS_BUTTON_MOUSE_OVER : EGBS_BUTTON_MOUSE_OFF;\r
 352                         drawSprite(state, HoverTime, pos);\r
 353                 }\r
 354                 else\r
 355                 {\r
 356                         // draw disabled\r
 357 //                      drawSprite(EGBS_BUTTON_DISABLED, 0, pos);\r
 358                 }\r
 359         }\r
 360 \r
 361         IGUIElement::draw();\r
 362 }\r
 363 \r
 364 void GUIButton::drawSprite(EGUI_BUTTON_STATE state, u32 startTime, const core::position2di& center)\r
 365 {\r
 366         u32 stateIdx = (u32)state;\r
 367 \r
 368         if (ButtonSprites[stateIdx].Index != -1)\r
 369         {\r
 370                 if ( ButtonSprites[stateIdx].Scale )\r
 371                 {\r
 372                         const video::SColor colors[] = {ButtonSprites[stateIdx].Color,ButtonSprites[stateIdx].Color,ButtonSprites[stateIdx].Color,ButtonSprites[stateIdx].Color};\r
 373                         SpriteBank->draw2DSprite(ButtonSprites[stateIdx].Index, AbsoluteRect.UpperLeftCorner,\r
 374                                         &AbsoluteClippingRect, colors[0], // FIXME: remove [0]\r
 375                                         porting::getTimeMs()-startTime, ButtonSprites[stateIdx].Loop);\r
 376                 }\r
 377                 else\r
 378                 {\r
 379                         SpriteBank->draw2DSprite(ButtonSprites[stateIdx].Index, center,\r
 380                                 &AbsoluteClippingRect, ButtonSprites[stateIdx].Color, startTime, porting::getTimeMs(),\r
 381                                 ButtonSprites[stateIdx].Loop, true);\r
 382                 }\r
 383         }\r
 384 }\r
 385 \r
 386 EGUI_BUTTON_IMAGE_STATE GUIButton::getImageState(bool pressed) const\r
 387 {\r
 388         // PATCH\r
 389         return getImageState(pressed, ButtonImages);\r
 390         // END PATCH\r
 391 }\r
 392 \r
 393 EGUI_BUTTON_IMAGE_STATE GUIButton::getImageState(bool pressed, const ButtonImage* images) const\r
 394 {\r
 395         // figure state we should have\r
 396         EGUI_BUTTON_IMAGE_STATE state = EGBIS_IMAGE_DISABLED;\r
 397         bool focused = Environment->hasFocus((IGUIElement*)this);\r
 398         bool mouseOver = isHovered();\r
 399         if (isEnabled())\r
 400         {\r
 401                 if ( pressed )\r
 402                 {\r
 403                         if ( focused && mouseOver )\r
 404                                 state = EGBIS_IMAGE_DOWN_FOCUSED_MOUSEOVER;\r
 405                         else if ( focused )\r
 406                                 state = EGBIS_IMAGE_DOWN_FOCUSED;\r
 407                         else if ( mouseOver )\r
 408                                 state = EGBIS_IMAGE_DOWN_MOUSEOVER;\r
 409                         else\r
 410                                 state = EGBIS_IMAGE_DOWN;\r
 411                 }\r
 412                 else // !pressed\r
 413                 {\r
 414                         if ( focused && mouseOver )\r
 415                                 state = EGBIS_IMAGE_UP_FOCUSED_MOUSEOVER;\r
 416                         else if ( focused )\r
 417                                 state = EGBIS_IMAGE_UP_FOCUSED;\r
 418                         else if ( mouseOver )\r
 419                                 state = EGBIS_IMAGE_UP_MOUSEOVER;\r
 420                         else\r
 421                                 state = EGBIS_IMAGE_UP;\r
 422                 }\r
 423         }\r
 424 \r
 425         // find a compatible state that has images\r
 426         while ( state != EGBIS_IMAGE_UP && !images[(u32)state].Texture )\r
 427         {\r
 428                 // PATCH\r
 429                 switch ( state )\r
 430                 {\r
 431                         case EGBIS_IMAGE_UP_FOCUSED:\r
 432                                 state = EGBIS_IMAGE_UP;\r
 433                                 break;\r
 434                         case EGBIS_IMAGE_UP_FOCUSED_MOUSEOVER:\r
 435                                 state = EGBIS_IMAGE_UP_FOCUSED;\r
 436                                 break;\r
 437                         case EGBIS_IMAGE_DOWN_MOUSEOVER:\r
 438                                 state = EGBIS_IMAGE_DOWN;\r
 439                                 break;\r
 440                         case EGBIS_IMAGE_DOWN_FOCUSED:\r
 441                                 state = EGBIS_IMAGE_DOWN;\r
 442                                 break;\r
 443                         case EGBIS_IMAGE_DOWN_FOCUSED_MOUSEOVER:\r
 444                                 state = EGBIS_IMAGE_DOWN_FOCUSED;\r
 445                                 break;\r
 446                         case EGBIS_IMAGE_DISABLED:\r
 447                                 if ( pressed )\r
 448                                         state = EGBIS_IMAGE_DOWN;\r
 449                                 else\r
 450                                         state = EGBIS_IMAGE_UP;\r
 451                                 break;\r
 452                         default:\r
 453                                 state = EGBIS_IMAGE_UP;\r
 454                 }\r
 455                 // END PATCH\r
 456         }\r
 457 \r
 458         return state;\r
 459 }\r
 460 \r
 461 //! sets another skin independent font. if this is set to zero, the button uses the font of the skin.\r
 462 void GUIButton::setOverrideFont(IGUIFont* font)\r
 463 {\r
 464         if (OverrideFont == font)\r
 465                 return;\r
 466 \r
 467         if (OverrideFont)\r
 468                 OverrideFont->drop();\r
 469 \r
 470         OverrideFont = font;\r
 471 \r
 472         if (OverrideFont)\r
 473                 OverrideFont->grab();\r
 474 \r
 475         StaticText->setOverrideFont(font);\r
 476 }\r
 477 \r
 478 //! Gets the override font (if any)\r
 479 IGUIFont * GUIButton::getOverrideFont() const\r
 480 {\r
 481         return OverrideFont;\r
 482 }\r
 483 \r
 484 //! Get the font which is used right now for drawing\r
 485 IGUIFont* GUIButton::getActiveFont() const\r
 486 {\r
 487         if ( OverrideFont )\r
 488                 return OverrideFont;\r
 489         IGUISkin* skin = Environment->getSkin();\r
 490         if (skin)\r
 491                 return skin->getFont(EGDF_BUTTON);\r
 492         return 0;\r
 493 }\r
 494 \r
 495 //! Sets another color for the text.\r
 496 void GUIButton::setOverrideColor(video::SColor color)\r
 497 {\r
 498         OverrideColor = color;\r
 499         OverrideColorEnabled = true;\r
 500 \r
 501         StaticText->setOverrideColor(color);\r
 502 }\r
 503 \r
 504 video::SColor GUIButton::getOverrideColor() const\r
 505 {\r
 506         return OverrideColor;\r
 507 }\r
 508 \r
 509 #if IRRLICHT_VERSION_MAJOR == 1 && IRRLICHT_VERSION_MINOR > 8\r
 510 video::SColor GUIButton::getActiveColor() const\r
 511 {\r
 512         return video::SColor(0,0,0,0); // unused?\r
 513 }\r
 514 #endif\r
 515 \r
 516 void GUIButton::enableOverrideColor(bool enable)\r
 517 {\r
 518         OverrideColorEnabled = enable;\r
 519 }\r
 520 \r
 521 bool GUIButton::isOverrideColorEnabled() const\r
 522 {\r
 523         return OverrideColorEnabled;\r
 524 }\r
 525 \r
 526 void GUIButton::setImage(EGUI_BUTTON_IMAGE_STATE state, video::ITexture* image, const core::rect<s32>& sourceRect)\r
 527 {\r
 528         if ( state >= EGBIS_COUNT )\r
 529                 return;\r
 530 \r
 531         if ( image )\r
 532                 image->grab();\r
 533 \r
 534         u32 stateIdx = (u32)state;\r
 535         if ( ButtonImages[stateIdx].Texture )\r
 536                 ButtonImages[stateIdx].Texture->drop();\r
 537 \r
 538         ButtonImages[stateIdx].Texture = image;\r
 539         ButtonImages[stateIdx].SourceRect = sourceRect;\r
 540 }\r
 541 \r
 542 // PATCH\r
 543 void GUIButton::setImage(video::ITexture* image)\r
 544 {\r
 545         setImage(gui::EGBIS_IMAGE_UP, image);\r
 546 }\r
 547 \r
 548 void GUIButton::setImage(video::ITexture* image, const core::rect<s32>& pos)\r
 549 {\r
 550         setImage(gui::EGBIS_IMAGE_UP, image, pos);\r
 551 }\r
 552 \r
 553 void GUIButton::setPressedImage(video::ITexture* image)\r
 554 {\r
 555         setImage(gui::EGBIS_IMAGE_DOWN, image);\r
 556 }\r
 557 \r
 558 void GUIButton::setPressedImage(video::ITexture* image, const core::rect<s32>& pos)\r
 559 {\r
 560         setImage(gui::EGBIS_IMAGE_DOWN, image, pos);\r
 561 }\r
 562 \r
 563 //! Sets the text displayed by the button\r
 564 void GUIButton::setText(const wchar_t* text)\r
 565 {\r
 566         StaticText->setText(text);\r
 567 \r
 568         IGUIButton::setText(text);\r
 569 }\r
 570 // END PATCH\r
 571 \r
 572 //! Sets if the button should behave like a push button. Which means it\r
 573 //! can be in two states: Normal or Pressed. With a click on the button,\r
 574 //! the user can change the state of the button.\r
 575 void GUIButton::setIsPushButton(bool isPushButton)\r
 576 {\r
 577         IsPushButton = isPushButton;\r
 578 }\r
 579 \r
 580 \r
 581 //! Returns if the button is currently pressed\r
 582 bool GUIButton::isPressed() const\r
 583 {\r
 584         return Pressed;\r
 585 }\r
 586 \r
 587 // PATCH\r
 588 //! Returns if this element (or one of its direct children) is hovered\r
 589 bool GUIButton::isHovered() const\r
 590 {\r
 591         IGUIElement *hovered = Environment->getHovered();\r
 592         return  hovered == this || (hovered != nullptr && hovered->getParent() == this);\r
 593 }\r
 594 // END PATCH\r
 595 \r
 596 //! Sets the pressed state of the button if this is a pushbutton\r
 597 void GUIButton::setPressed(bool pressed)\r
 598 {\r
 599         if (Pressed != pressed)\r
 600         {\r
 601                 ClickTime = porting::getTimeMs();\r
 602                 Pressed = pressed;\r
 603                 setFromState();\r
 604         }\r
 605 }\r
 606 \r
 607 \r
 608 //! Returns whether the button is a push button\r
 609 bool GUIButton::isPushButton() const\r
 610 {\r
 611         return IsPushButton;\r
 612 }\r
 613 \r
 614 \r
 615 //! Sets if the alpha channel should be used for drawing images on the button (default is false)\r
 616 void GUIButton::setUseAlphaChannel(bool useAlphaChannel)\r
 617 {\r
 618         UseAlphaChannel = useAlphaChannel;\r
 619 }\r
 620 \r
 621 \r
 622 //! Returns if the alpha channel should be used for drawing images on the button\r
 623 bool GUIButton::isAlphaChannelUsed() const\r
 624 {\r
 625         return UseAlphaChannel;\r
 626 }\r
 627 \r
 628 \r
 629 bool GUIButton::isDrawingBorder() const\r
 630 {\r
 631         return DrawBorder;\r
 632 }\r
 633 \r
 634 \r
 635 // PATCH\r
 636 GUIButton* GUIButton::addButton(IGUIEnvironment *environment,\r
 637                 const core::rect<s32>& rectangle, ISimpleTextureSource *tsrc,\r
 638                 IGUIElement* parent, s32 id, const wchar_t* text,\r
 639                 const wchar_t *tooltiptext)\r
 640 {\r
 641         GUIButton* button = new GUIButton(environment, parent ? parent : environment->getRootGUIElement(), id, rectangle, tsrc);\r
 642         if (text)\r
 643                 button->setText(text);\r
 644 \r
 645         if ( tooltiptext )\r
 646                 button->setToolTipText ( tooltiptext );\r
 647 \r
 648         button->drop();\r
 649         return button;\r
 650 }\r
 651 \r
 652 void GUIButton::setColor(video::SColor color)\r
 653 {\r
 654         BgColor = color;\r
 655 \r
 656         float d = 0.65f;\r
 657         for (size_t i = 0; i < 4; i++) {\r
 658                 video::SColor base = Environment->getSkin()->getColor((gui::EGUI_DEFAULT_COLOR)i);\r
 659                 Colors[i] = base.getInterpolated(color, d);\r
 660         }\r
 661 }\r
 662 \r
 663 //! Set element properties from a StyleSpec corresponding to the button state\r
 664 void GUIButton::setFromState()\r
 665 {\r
 666         StyleSpec::State state = StyleSpec::STATE_DEFAULT;\r
 667 \r
 668         if (isPressed())\r
 669                 state = static_cast<StyleSpec::State>(state | StyleSpec::STATE_PRESSED);\r
 670 \r
 671         if (isHovered())\r
 672                 state = static_cast<StyleSpec::State>(state | StyleSpec::STATE_HOVERED);\r
 673 \r
 674         setFromStyle(StyleSpec::getStyleFromStatePropagation(Styles, state));\r
 675 }\r
 676 \r
 677 //! Set element properties from a StyleSpec\r
 678 void GUIButton::setFromStyle(const StyleSpec& style)\r
 679 {\r
 680         bool hovered = (style.getState() & StyleSpec::STATE_HOVERED) != 0;\r
 681         bool pressed = (style.getState() & StyleSpec::STATE_PRESSED) != 0;\r
 682 \r
 683         if (style.isNotDefault(StyleSpec::BGCOLOR)) {\r
 684                 setColor(style.getColor(StyleSpec::BGCOLOR));\r
 685 \r
 686                 // If we have a propagated hover/press color, we need to automatically\r
 687                 // lighten/darken it\r
 688                 if (!Styles[style.getState()].isNotDefault(StyleSpec::BGCOLOR)) {\r
 689                                 if (pressed) {\r
 690                                         BgColor = multiplyColorValue(BgColor, COLOR_PRESSED_MOD);\r
 691 \r
 692                                         for (size_t i = 0; i < 4; i++)\r
 693                                                 Colors[i] = multiplyColorValue(Colors[i], COLOR_PRESSED_MOD);\r
 694                                 } else if (hovered) {\r
 695                                         BgColor = multiplyColorValue(BgColor, COLOR_HOVERED_MOD);\r
 696 \r
 697                                         for (size_t i = 0; i < 4; i++)\r
 698                                                 Colors[i] = multiplyColorValue(Colors[i], COLOR_HOVERED_MOD);\r
 699                                 }\r
 700                 }\r
 701 \r
 702         } else {\r
 703                 BgColor = video::SColor(255, 255, 255, 255);\r
 704                 for (size_t i = 0; i < 4; i++) {\r
 705                         video::SColor base =\r
 706                                         Environment->getSkin()->getColor((gui::EGUI_DEFAULT_COLOR)i);\r
 707                         if (pressed) {\r
 708                                 Colors[i] = multiplyColorValue(base, COLOR_PRESSED_MOD);\r
 709                         } else if (hovered) {\r
 710                                 Colors[i] = multiplyColorValue(base, COLOR_HOVERED_MOD);\r
 711                         } else {\r
 712                                 Colors[i] = base;\r
 713                         }\r
 714                 }\r
 715         }\r
 716 \r
 717         if (style.isNotDefault(StyleSpec::TEXTCOLOR)) {\r
 718                 setOverrideColor(style.getColor(StyleSpec::TEXTCOLOR));\r
 719         } else {\r
 720                 setOverrideColor(video::SColor(255,255,255,255));\r
 721                 OverrideColorEnabled = false;\r
 722         }\r
 723         setNotClipped(style.getBool(StyleSpec::NOCLIP, false));\r
 724         setDrawBorder(style.getBool(StyleSpec::BORDER, true));\r
 725         setUseAlphaChannel(style.getBool(StyleSpec::ALPHA, true));\r
 726         setOverrideFont(style.getFont());\r
 727 \r
 728         if (style.isNotDefault(StyleSpec::BGIMG)) {\r
 729                 video::ITexture *texture = style.getTexture(StyleSpec::BGIMG,\r
 730                                 getTextureSource());\r
 731                 setImage(guiScalingImageButton(\r
 732                                 Environment->getVideoDriver(), texture,\r
 733                                                 AbsoluteRect.getWidth(), AbsoluteRect.getHeight()));\r
 734                 setScaleImage(true);\r
 735         } else {\r
 736                 setImage(nullptr);\r
 737         }\r
 738 \r
 739         BgMiddle = style.getRect(StyleSpec::BGIMG_MIDDLE, BgMiddle);\r
 740 \r
 741         // Child padding and offset\r
 742         Padding = style.getRect(StyleSpec::PADDING, core::rect<s32>());\r
 743         Padding = core::rect<s32>(\r
 744                         Padding.UpperLeftCorner + BgMiddle.UpperLeftCorner,\r
 745                         Padding.LowerRightCorner + BgMiddle.LowerRightCorner);\r
 746 \r
 747         GUISkin* skin = dynamic_cast<GUISkin*>(Environment->getSkin());\r
 748         core::vector2d<s32> defaultPressOffset(\r
 749                         skin->getSize(irr::gui::EGDS_BUTTON_PRESSED_IMAGE_OFFSET_X),\r
 750                         skin->getSize(irr::gui::EGDS_BUTTON_PRESSED_IMAGE_OFFSET_Y));\r
 751         ContentOffset = style.getVector2i(StyleSpec::CONTENT_OFFSET, isPressed()\r
 752                         ? defaultPressOffset\r
 753                         : core::vector2d<s32>(0));\r
 754 \r
 755         core::rect<s32> childBounds(\r
 756                                 Padding.UpperLeftCorner.X + ContentOffset.X,\r
 757                                 Padding.UpperLeftCorner.Y + ContentOffset.Y,\r
 758                                 AbsoluteRect.getWidth() + Padding.LowerRightCorner.X + ContentOffset.X,\r
 759                                 AbsoluteRect.getHeight() + Padding.LowerRightCorner.Y + ContentOffset.Y);\r
 760 \r
 761         for (IGUIElement *child : getChildren()) {\r
 762                 child->setRelativePosition(childBounds);\r
 763         }\r
 764 }\r
 765 \r
 766 //! Set the styles used for each state\r
 767 void GUIButton::setStyles(const std::array<StyleSpec, StyleSpec::NUM_STATES>& styles)\r
 768 {\r
 769         Styles = styles;\r
 770         setFromState();\r
 771 }\r
 772 // END PATCH\r