src/gui/guiButtonImage.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "guiButtonImage.h"
  21
  22 #include "client/guiscalingfilter.h"
  23 #include "debug.h"
  24 #include "IGUIEnvironment.h"
  25 #include "IGUIImage.h"
  26 #include "IVideoDriver.h"
  27 #include "StyleSpec.h"
  28
  29 using namespace irr;
  30 using namespace gui;
  31
  32 GUIButtonImage::GUIButtonImage(gui::IGUIEnvironment *environment,
  33                 gui::IGUIElement *parent, s32 id, core::rect<s32> rectangle,
  34                 ISimpleTextureSource *tsrc, bool noclip) :
  35                 GUIButton(environment, parent, id, rectangle, tsrc, noclip)
  36 {
  37         m_image = Environment->addImage(core::rect<s32>(0, 0, rectangle.getWidth(),
  38                                                         rectangle.getHeight()),
  39                         this);
  40         m_image->setScaleImage(isScalingImage());
  41         sendToBack(m_image);
  42 }
  43
  44 void GUIButtonImage::setForegroundImage(video::ITexture *image)
  45 {
  46         if (image == m_foreground_image)
  47                 return;
  48
  49         if (image != nullptr)
  50                 image->grab();
  51
  52         if (m_foreground_image != nullptr)
  53                 m_foreground_image->drop();
  54
  55         m_foreground_image = image;
  56         m_image->setImage(image);
  57 }
  58
  59 //! Set element properties from a StyleSpec
  60 void GUIButtonImage::setFromStyle(const StyleSpec &style)
  61 {
  62         GUIButton::setFromStyle(style);
  63
  64         video::IVideoDriver *driver = Environment->getVideoDriver();
  65
  66         if (style.isNotDefault(StyleSpec::FGIMG)) {
  67                 video::ITexture *texture =
  68                                 style.getTexture(StyleSpec::FGIMG, getTextureSource());
  69
  70                 setForegroundImage(guiScalingImageButton(driver, texture,
  71                                 AbsoluteRect.getWidth(), AbsoluteRect.getHeight()));
  72                 setScaleImage(true);
  73         } else {
  74                 setForegroundImage(nullptr);
  75         }
  76 }
  77
  78 void GUIButtonImage::setScaleImage(bool scaleImage)
  79 {
  80         GUIButton::setScaleImage(scaleImage);
  81         m_image->setScaleImage(scaleImage);
  82 }
  83
  84 GUIButtonImage *GUIButtonImage::addButton(IGUIEnvironment *environment,
  85                 const core::rect<s32> &rectangle, ISimpleTextureSource *tsrc,
  86                 IGUIElement *parent, s32 id, const wchar_t *text,
  87                 const wchar_t *tooltiptext)
  88 {
  89         GUIButtonImage *button = new GUIButtonImage(environment,
  90                         parent ? parent : environment->getRootGUIElement(), id, rectangle,
  91                         tsrc);
  92
  93         if (text)
  94                 button->setText(text);
  95
  96         if (tooltiptext)
  97                 button->setToolTipText(tooltiptext);
  98
  99         button->drop();
 100         return button;
 101 }