progressbar.cpp

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/*
 * The ManaPlus Client
 * Copyright (C) 2004-2009 The Mana World Development Team
 * Copyright (C) 2009-2010 The Mana Developers
 * Copyright (C) 2011-2019 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/progressbar.h"
 
#include "settings.h"
 
#include "gui/gui.h"
#include "gui/skin.h"
 
#include "gui/fonts/font.h"
 
#include "utils/delete2.h"
 
#include "render/graphics.h"
 
#include "render/vertexes/imagecollection.h"
 
#include "debug.h"
 
int ProgressBar::mInstances = 0;
float ProgressBar::mAlpha = 1.0;
 
ProgressBar::ProgressBar(const Widget2 *const widget,
 float progress,
 const int width,
 const int height,
 const ProgressColorIdT backColor,
 const std::string &skin,
 const std::string &skinFill) :
 Widget(widget),
 WidgetListener(),
 mFillRect(),
 mTextChunk(),
 mSkin(nullptr),
 mProgress(progress),
 mProgressToGo(progress),
 mBackgroundColorToGo(),
 mText(),
 mVertexes(new ImageCollection),
 mProgressPalette(backColor),
 mPadding(2),
 mFillPadding(3),
 mFillImage(false),
 mSmoothProgress(true),
 mSmoothColorChange(true),
 mTextChanged(true)
{
 mBackgroundColor = Theme::getProgressColor(
 backColor >= ProgressColorId::PROG_HP
 ? backColor : ProgressColorId::PROG_HP,
 mProgress);
 mBackgroundColorToGo = mBackgroundColor;
 mForegroundColor2 = getThemeColor(ThemeColorId::PROGRESS_BAR_OUTLINE,
 255U);
 
 // The progress value is directly set at load time:
 if (mProgress > 1.0F || mProgress < 0.0F)
 mProgress = 1.0F;
 
 mForegroundColor = getThemeColor(ThemeColorId::PROGRESS_BAR, 255U);
 addWidgetListener(this);
 setSize(width, height);
 
 if (theme != nullptr)
 {
 mSkin = theme->load(skin,
 "progressbar.xml",
 true,
 Theme::getThemePath());
 if (mSkin != nullptr)
 {
 setPadding(mSkin->getPadding());
 mFillPadding = mSkin->getOption("fillPadding");
 mFillImage = mSkin->getOption("fillImage") != 0;
 if (mFillImage)
 {
 theme->loadRect(mFillRect,
 skinFill,
 "progressbar_fill.xml",
 0,
 8);
 }
 }
 setHeight(2 * mPadding + getFont()->getHeight() + 2);
 }
 
 mInstances++;
}
 
ProgressBar::~ProgressBar()
{
 if (gui != nullptr)
 gui->removeDragged(this);
 
 mInstances--;
 if (mSkin != nullptr)
 {
 if (theme != nullptr)
 theme->unload(mSkin);
 mSkin = nullptr;
 }
 Theme::unloadRect(mFillRect, 0, 8);
 delete2(mVertexes)
 mTextChunk.deleteImage();
}
 
void ProgressBar::logic()
{
 BLOCK_START("ProgressBar::logic")
 if (mSmoothColorChange && mBackgroundColorToGo != mBackgroundColor)
 {
 // Smoothly changing the color for a nicer effect.
 if (mBackgroundColorToGo.r > mBackgroundColor.r)
 mBackgroundColor.r++;
 if (mBackgroundColorToGo.g > mBackgroundColor.g)
 mBackgroundColor.g++;
 if (mBackgroundColorToGo.b > mBackgroundColor.b)
 mBackgroundColor.b++;
 if (mBackgroundColorToGo.r < mBackgroundColor.r)
 mBackgroundColor.r--;
 if (mBackgroundColorToGo.g < mBackgroundColor.g)
 mBackgroundColor.g--;
 if (mBackgroundColorToGo.b < mBackgroundColor.b)
 mBackgroundColor.b--;
 mRedraw = true;
 }
 
 if (mSmoothProgress && mProgressToGo != mProgress)
 {
 // Smoothly showing the progressbar changes.
 if (mProgressToGo > mProgress)
 mProgress = std::min(1.0F, mProgress + 0.005F);
 if (mProgressToGo < mProgress)
 mProgress = std::max(0.0F, mProgress - 0.005F);
 mRedraw = true;
 }
 BLOCK_END("ProgressBar::logic")
}
 
void ProgressBar::updateAlpha()
{
 const float alpha = std::max(settings.guiAlpha,
 theme->getMinimumOpacity());
 mAlpha = alpha;
}
 
void ProgressBar::draw(Graphics *const graphics)
{
 BLOCK_START("ProgressBar::draw")
 if (mSkin == nullptr)
 {
 BLOCK_END("ProgressBar::draw")
 return;
 }
 
 updateAlpha();
 mBackgroundColor.a = CAST_U32(mAlpha * 255);
 
 if (mRedraw || graphics->getRedraw())
 {
 mRedraw = false;
 mVertexes->clear();
 graphics->calcWindow(mVertexes, 0, 0,
 mDimension.width, mDimension.height, mSkin->getBorder());
 if (mFillImage)
 {
 const unsigned int pad = 2 * mFillPadding;
 const int maxWidth = mDimension.width - pad;
 int width = CAST_S32(mProgress
 * static_cast<float>(maxWidth));
 if (width > 0)
 {
 if (width > maxWidth)
 width = maxWidth;
 graphics->calcWindow(mVertexes, mFillPadding, mFillPadding,
 width, mDimension.height - pad, mFillRect);
 }
 }
 graphics->finalize(mVertexes);
 }
 
 graphics->drawTileCollection(mVertexes);
 
 // The bar
 if (!mFillImage && mProgress > 0)
 {
 graphics->setColor(mBackgroundColor);
 const unsigned int pad = 2 * mFillPadding;
 const int maxWidth = mDimension.width - pad;
 int width = CAST_S32(mProgress * static_cast<float>(maxWidth));
 if (width > 0)
 {
 if (width > maxWidth)
 width = maxWidth;
 graphics->fillRectangle(Rect(mFillPadding, mFillPadding,
 width, mDimension.height - pad));
 }
 }
 
 // The label
 if (!mText.empty())
 {
 Font *const font = gui->getFont();
 if (mTextChanged)
 {
 mTextChunk.textFont = font;
 mTextChunk.deleteImage();
 mTextChunk.text = mText;
 mTextChunk.color = mForegroundColor;
 mTextChunk.color2 = mForegroundColor2;
 font->generate(mTextChunk);
 mTextChanged = false;
 }
 
 const Image *const image = mTextChunk.img;
 if (image != nullptr)
 {
 const int textX = (mDimension.width - font->getWidth(mText)) / 2;
 const int textY = (mDimension.height - font->getHeight()) / 2;
 graphics->drawImage(image, textX, textY);
 }
 }
 BLOCK_END("ProgressBar::draw")
}
 
void ProgressBar::safeDraw(Graphics *const graphics)
{
 BLOCK_START("ProgressBar::safeDraw")
 if (mSkin == nullptr)
 {
 BLOCK_END("ProgressBar::safeDraw")
 return;
 }
 
 updateAlpha();
 mBackgroundColor.a = CAST_U32(mAlpha * 255);
 
 graphics->drawImageRect(0, 0, mDimension.width, mDimension.height,
 mSkin->getBorder());
 if (mFillImage)
 {
 const unsigned int pad = 2 * mFillPadding;
 const int maxWidth = mDimension.width - pad;
 int width = CAST_S32(mProgress
 * static_cast<float>(maxWidth));
 if (width > 0)
 {
 if (width > maxWidth)
 width = maxWidth;
 graphics->drawImageRect(mFillPadding, mFillPadding,
 width, mDimension.height - pad, mFillRect);
 }
 }
 
 // The bar
 if (!mFillImage && mProgress > 0)
 {
 graphics->setColor(mBackgroundColor);
 const unsigned int pad = 2 * mFillPadding;
 const int maxWidth = mDimension.width - pad;
 int width = CAST_S32(mProgress * static_cast<float>(maxWidth));
 if (width > 0)
 {
 if (width > maxWidth)
 width = maxWidth;
 graphics->fillRectangle(Rect(mFillPadding, mFillPadding,
 width, mDimension.height - pad));
 }
 }
 
 // The label
 if (!mText.empty())
 {
 Font *const font = gui->getFont();
 if (mTextChanged)
 {
 mTextChunk.textFont = font;
 mTextChunk.deleteImage();
 mTextChunk.text = mText;
 mTextChunk.color = mForegroundColor;
 mTextChunk.color2 = mForegroundColor2;
 font->generate(mTextChunk);
 mTextChanged = false;
 }
 
 const Image *const image = mTextChunk.img;
 if (image != nullptr)
 {
 const int textX = (mDimension.width - font->getWidth(mText)) / 2;
 const int textY = (mDimension.height - font->getHeight()) / 2;
 graphics->drawImage(image, textX, textY);
 }
 }
 BLOCK_END("ProgressBar::safeDraw")
}
 
void ProgressBar::setProgress(const float progress)
{
 const float p = std::min(1.0F, std::max(0.0F, progress));
 mProgressToGo = p;
 mRedraw = true;
 
 if (!mSmoothProgress)
 mProgress = p;
 
 if (mProgressPalette >= ProgressColorId::PROG_HP)
 {
 mBackgroundColorToGo = Theme::getProgressColor(
 mProgressPalette, progress);
 }
}
 
void ProgressBar::setProgressPalette(const ProgressColorIdT progressPalette)
{
 const ProgressColorIdT oldPalette = mProgressPalette;
 mProgressPalette = progressPalette;
 mRedraw = true;
 
 if (mProgressPalette != oldPalette &&
 mProgressPalette >= ProgressColorId::PROG_HP)
 {
 mBackgroundColorToGo = Theme::getProgressColor(
 mProgressPalette, mProgressToGo);
 }
}
 
void ProgressBar::setBackgroundColor(const Color &color)
{
 mRedraw = true;
 mBackgroundColorToGo = color;
 
 if (!mSmoothColorChange)
 mBackgroundColor = color;
}
 
void ProgressBar::setColor(const Color &color1, const Color &color2)
{
 mForegroundColor = color1;
 mForegroundColor2 = color2;
 mTextChanged = true;
}
 
void ProgressBar::widgetResized(const Event &event A_UNUSED)
{
 mRedraw = true;
}
 
void ProgressBar::widgetMoved(const Event &event A_UNUSED)
{
 mRedraw = true;
}
 
void ProgressBar::setText(const std::string &str)
{
 if (mText != str)
 {
 mText = str;
 mTextChanged = true;
 }
}
 
void ProgressBar::widgetHidden(const Event &event A_UNUSED)
{
 mTextChanged = true;
 mTextChunk.deleteImage();
}