extendedlistbox.cpp

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/*
 * The ManaPlus Client
 * Copyright (C) 2012-2019 The ManaPlus Developers
 * Copyright (C) 2019-2021 Andrei Karas
 *
 * This file is part of The ManaPlus Client.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "gui/widgets/extendedlistbox.h"
 
#include "gui/models/extendedlistmodel.h"
 
#include "gui/skin.h"
 
#include "gui/fonts/font.h"
 
#include "render/graphics.h"
 
#include "debug.h"
 
ExtendedListBox::ExtendedListBox(const Widget2 *const widget,
 ListModel *const listModel,
 const std::string &skin,
 const unsigned int rowHeight) :
 ListBox(widget, listModel, skin),
 mImagePadding(mSkin != nullptr ? mSkin->getOption("imagePadding") : 0),
 mSpacing(mSkin != nullptr ? mSkin->getOption("spacing") : 0),
 mHeight(0),
 mListItems(),
 mSelectedItems()
{
 if (rowHeight != 0U)
 mRowHeight = rowHeight;
}
 
ExtendedListBox::~ExtendedListBox()
{
}
 
void ExtendedListBox::draw(Graphics *const graphics)
{
 if (mListModel == nullptr)
 return;
 
 BLOCK_START("ExtendedListBox::draw")
 ExtendedListModel *const model = static_cast<ExtendedListModel *>(
 mListModel);
 
 updateAlpha();
 Font *const font = getFont();
 
 const int height = CAST_S32(mRowHeight);
 const int pad2 = 2 + mPadding;
 const int width = mDimension.width;
 int textPos = (height - font->getHeight()) / 2 + mPadding;
 if (textPos < 0)
 textPos = 0;
 
 const int sz = mListModel->getNumberOfElements();
 mListItems.clear();
 mSelectedItems.clear();
 int y = 0;
 const int insideWidth = width - pad2;
 for (int f = 0; f < sz; f ++)
 {
 int row = f;
 bool useImage = true;
 std::string str = mListModel->getElementAt(f);
 int strWidth = font->getWidth(str) + 8;
 
 const Image *const image = model->getImageAt(row);
 if (image != nullptr)
 strWidth += image->getWidth() + mImagePadding;
 
 STD_VECTOR<ExtendedListBoxItem> &list =
 row == mSelected ? mSelectedItems : mListItems;
 
 if (insideWidth < strWidth)
 {
 const size_t strSize = str.size();
 size_t divPos = strSize / 2;
 if (divPos > 0 && CAST_U8(
 str[divPos - 1]) >= 0xc0)
 {
 divPos --;
 }
 for (size_t d = divPos; d > 10; d --)
 {
 if (str[d] == 32)
 {
 divPos = d + 1;
 break;
 }
 }
 list.push_back(ExtendedListBoxItem(row,
 str.substr(0, divPos), useImage, y));
 str = str.substr(divPos);
 y += height;
 useImage = false;
 }
 list.push_back(ExtendedListBoxItem(row, str, useImage, y));
 
 y += height;
 }
 mHeight = y + height;
 
 const size_t itemsSz = mListItems.size();
 const size_t selSz = mSelectedItems.size();
 int minY = -1;
 int maxY = -1;
 for (size_t f = 0; f < selSz; f ++)
 {
 const ExtendedListBoxItem &item = mSelectedItems[f];
 const int y1 = item.y;
 if (minY == -1)
 minY = y1;
 if (maxY < y1)
 maxY = y1;
 }
 
 if (minY != -1)
 {
 mHighlightColor.a = CAST_U32(mAlpha * 255.0F);
 graphics->setColor(mHighlightColor);
 graphics->fillRectangle(Rect(mPadding, minY + mPadding,
 width - pad2, maxY - minY + height));
 }
 
 for (size_t f = 0; f < itemsSz; ++f)
 {
 const ExtendedListBoxItem &item = mListItems[f];
 if (item.image)
 {
 const int row1 = item.row;
 const Image *const image = model->getImageAt(row1);
 if (image != nullptr)
 {
 graphics->drawImage(image,
 mImagePadding,
 item.y + (height - image->getHeight()) / 2 + mPadding);
 }
 }
 }
 
 for (size_t f = 0; f < itemsSz; ++f)
 {
 const ExtendedListBoxItem &item = mListItems[f];
 const int row1 = item.row;
 const int y1 = item.y;
 const Image *const image = model->getImageAt(row1);
 if ((image == nullptr) || !item.image)
 {
 font->drawString(graphics,
 mForegroundColor, mForegroundColor2,
 item.text,
 mPadding, y1 + textPos);
 }
 else
 {
 font->drawString(graphics,
 mForegroundColor, mForegroundColor2,
 item.text,
 image->getWidth() + mImagePadding + mSpacing, y1 + textPos);
 }
 }
 
 for (size_t f = 0; f < selSz; ++f)
 {
 const ExtendedListBoxItem &item = mSelectedItems[f];
 const int row1 = item.row;
 const int y1 = item.y;
 const Image *const image = model->getImageAt(row1);
 if ((image == nullptr) || !item.image)
 {
 font->drawString(graphics,
 mForegroundSelectedColor, mForegroundSelectedColor2,
 item.text,
 mPadding, y1 + textPos);
 }
 else
 {
 font->drawString(graphics,
 mForegroundSelectedColor, mForegroundSelectedColor2,
 item.text,
 image->getWidth() + mImagePadding + mSpacing, y1 + textPos);
 }
 }
 
 for (size_t f = 0; f < selSz; ++f)
 {
 const ExtendedListBoxItem &item = mSelectedItems[f];
 if (item.image)
 {
 const int row1 = item.row;
 const Image *const image = model->getImageAt(row1);
 if (image != nullptr)
 {
 graphics->drawImage(image,
 mImagePadding,
 item.y + (height - image->getHeight()) / 2 + mPadding);
 }
 }
 }
 
 BLOCK_END("ExtendedListBox::draw")
}
 
void ExtendedListBox::safeDraw(Graphics *const graphics)
{
 ExtendedListBox::draw(graphics);
}
 
void ExtendedListBox::adjustSize()
{
 if (mHeight != 0)
 setHeight(mHeight + 2 * mPadding);
 else
 ListBox::adjustSize();
}
 
int ExtendedListBox::getSelectionByMouse(const int y) const
{
 if (mListItems.empty() && mSelectedItems.empty())
 return ListBox::getSelectionByMouse(y);
 
 const int height = CAST_S32(mRowHeight);
 const size_t itemsSz = mListItems.size();
 for (size_t f = 0; f < itemsSz; f ++)
 {
 const ExtendedListBoxItem &item = mListItems[f];
 const int y2 = item.y + mPadding;
 if (y2 <= y && y2 + height > y)
 return item.row;
 }
 
 const size_t selSz = mSelectedItems.size();
 for (size_t f = 0; f < selSz; f ++)
 {
 const ExtendedListBoxItem &item = mSelectedItems[f];
 const int y2 = item.y + mPadding;
 if (y2 <= y && y2 + height > y)
 return item.row;
 }
 return 0;
}