/xbmc/guilib/GUIFadeLabelControl.cpp
http://github.com/xbmc/xbmc · C++ · 266 lines · 222 code · 35 blank · 9 comment · 57 complexity · b7e29c3eb5a4652fb588e180dc16d83a MD5 · raw file
- /*
- * Copyright (C) 2005-2018 Team Kodi
- * This file is part of Kodi - https://kodi.tv
- *
- * SPDX-License-Identifier: GPL-2.0-or-later
- * See LICENSES/README.md for more information.
- */
- #include "GUIFadeLabelControl.h"
- #include "GUIMessage.h"
- #include "utils/Random.h"
- using namespace KODI::GUILIB;
- CGUIFadeLabelControl::CGUIFadeLabelControl(int parentID, int controlID, float posX, float posY, float width, float height, const CLabelInfo& labelInfo, bool scrollOut, unsigned int timeToDelayAtEnd, bool resetOnLabelChange, bool randomized)
- : CGUIControl(parentID, controlID, posX, posY, width, height), m_label(labelInfo), m_scrollInfo(50, labelInfo.offsetX, labelInfo.scrollSpeed)
- , m_textLayout(labelInfo.font, false)
- , m_fadeAnim(CAnimation::CreateFader(100, 0, timeToDelayAtEnd, 200))
- {
- m_currentLabel = 0;
- ControlType = GUICONTROL_FADELABEL;
- m_scrollOut = scrollOut;
- m_fadeAnim.ApplyAnimation();
- m_lastLabel = -1;
- m_scrollSpeed = labelInfo.scrollSpeed; // save it for later
- m_resetOnLabelChange = resetOnLabelChange;
- m_shortText = true;
- m_scroll = true;
- m_randomized = randomized;
- }
- CGUIFadeLabelControl::CGUIFadeLabelControl(const CGUIFadeLabelControl &from)
- : CGUIControl(from), m_infoLabels(from.m_infoLabels), m_label(from.m_label), m_scrollInfo(from.m_scrollInfo), m_textLayout(from.m_textLayout),
- m_fadeAnim(from.m_fadeAnim)
- {
- m_scrollOut = from.m_scrollOut;
- m_scrollSpeed = from.m_scrollSpeed;
- m_resetOnLabelChange = from.m_resetOnLabelChange;
- m_fadeAnim.ApplyAnimation();
- m_currentLabel = 0;
- m_lastLabel = -1;
- ControlType = GUICONTROL_FADELABEL;
- m_shortText = from.m_shortText;
- m_scroll = from.m_scroll;
- m_randomized = from.m_randomized;
- m_allLabelsShown = from.m_allLabelsShown;
- }
- CGUIFadeLabelControl::~CGUIFadeLabelControl(void) = default;
- void CGUIFadeLabelControl::SetInfo(const std::vector<GUIINFO::CGUIInfoLabel> &infoLabels)
- {
- m_lastLabel = -1;
- m_infoLabels = infoLabels;
- m_allLabelsShown = m_infoLabels.empty();
- if (m_randomized)
- KODI::UTILS::RandomShuffle(m_infoLabels.begin(), m_infoLabels.end());
- }
- void CGUIFadeLabelControl::AddLabel(const std::string &label)
- {
- m_infoLabels.emplace_back(label, "", GetParentID());
- m_allLabelsShown = false;
- }
- void CGUIFadeLabelControl::Process(unsigned int currentTime, CDirtyRegionList &dirtyregions)
- {
- if (m_infoLabels.empty() || !m_label.font)
- {
- CGUIControl::Process(currentTime, dirtyregions);
- return;
- }
- if (m_currentLabel >= m_infoLabels.size() )
- m_currentLabel = 0;
- if (m_textLayout.Update(GetLabel()))
- { // changed label - update our suffix based on length of available text
- float width, height;
- m_textLayout.GetTextExtent(width, height);
- float spaceWidth = m_label.font->GetCharWidth(L' ');
- unsigned int numSpaces = (unsigned int)(m_width / spaceWidth) + 1;
- if (width < m_width) // append spaces for scrolling
- numSpaces += (unsigned int)((m_width - width) / spaceWidth) + 1;
- m_shortText = (width + m_label.offsetX) < m_width;
- m_scrollInfo.suffix.assign(numSpaces, ' ');
- if (m_resetOnLabelChange)
- {
- m_scrollInfo.Reset();
- m_fadeAnim.ResetAnimation();
- }
- MarkDirtyRegion();
- }
- if (m_shortText && m_infoLabels.size() == 1)
- m_allLabelsShown = true;
- if (m_currentLabel != m_lastLabel)
- { // new label - reset scrolling
- m_scrollInfo.Reset();
- m_fadeAnim.QueueAnimation(ANIM_PROCESS_REVERSE);
- m_lastLabel = m_currentLabel;
- MarkDirtyRegion();
- }
- if (m_infoLabels.size() > 1 || !m_shortText)
- { // have scrolling text
- bool moveToNextLabel = false;
- if (!m_scrollOut)
- {
- if (m_scrollInfo.pixelPos + m_width > m_scrollInfo.m_textWidth)
- {
- if (m_fadeAnim.GetProcess() != ANIM_PROCESS_NORMAL)
- m_fadeAnim.QueueAnimation(ANIM_PROCESS_NORMAL);
- moveToNextLabel = true;
- }
- }
- else if (m_scrollInfo.pixelPos > m_scrollInfo.m_textWidth)
- moveToNextLabel = true;
- if(m_scrollInfo.pixelSpeed || m_fadeAnim.GetState() == ANIM_STATE_IN_PROCESS)
- MarkDirtyRegion();
- // apply the fading animation
- TransformMatrix matrix;
- m_fadeAnim.Animate(currentTime, true);
- m_fadeAnim.RenderAnimation(matrix);
- m_fadeMatrix = CServiceBroker::GetWinSystem()->GetGfxContext().AddTransform(matrix);
- if (m_fadeAnim.GetState() == ANIM_STATE_APPLIED)
- m_fadeAnim.ResetAnimation();
- m_scrollInfo.SetSpeed((m_fadeAnim.GetProcess() == ANIM_PROCESS_NONE) ? m_scrollSpeed : 0);
- if (moveToNextLabel)
- { // increment the label and reset scrolling
- if (m_fadeAnim.GetProcess() != ANIM_PROCESS_NORMAL)
- {
- if (++m_currentLabel >= m_infoLabels.size())
- {
- m_currentLabel = 0;
- m_allLabelsShown = true;
- }
- m_scrollInfo.Reset();
- m_fadeAnim.QueueAnimation(ANIM_PROCESS_REVERSE);
- }
- }
- if (m_scroll)
- {
- m_textLayout.UpdateScrollinfo(m_scrollInfo);
- }
- CServiceBroker::GetWinSystem()->GetGfxContext().RemoveTransform();
- }
- CGUIControl::Process(currentTime, dirtyregions);
- }
- bool CGUIFadeLabelControl::UpdateColors()
- {
- bool changed = CGUIControl::UpdateColors();
- changed |= m_label.UpdateColors();
- return changed;
- }
- void CGUIFadeLabelControl::Render()
- {
- if (!m_label.font)
- { // nothing to render
- CGUIControl::Render();
- return ;
- }
- float posY = m_posY;
- if (m_label.align & XBFONT_CENTER_Y)
- posY += m_height * 0.5f;
- if (m_infoLabels.size() == 1 && m_shortText)
- { // single label set and no scrolling required - just display
- float posX = m_posX + m_label.offsetX;
- if (m_label.align & XBFONT_CENTER_X)
- posX = m_posX + m_width * 0.5f;
- else if (m_label.align & XBFONT_RIGHT)
- posX = m_posX + m_width;
- m_textLayout.Render(posX, posY, m_label.angle, m_label.textColor, m_label.shadowColor, m_label.align, m_width - m_label.offsetX);
- CGUIControl::Render();
- return;
- }
- // render the scrolling text
- CServiceBroker::GetWinSystem()->GetGfxContext().SetTransform(m_fadeMatrix);
- if (!m_scroll || (!m_scrollOut && m_shortText))
- {
- float posX = m_posX + m_label.offsetX;
- if (m_label.align & XBFONT_CENTER_X)
- posX = m_posX + m_width * 0.5f;
- else if (m_label.align & XBFONT_RIGHT)
- posX = m_posX + m_width;
- m_textLayout.Render(posX, posY, 0, m_label.textColor, m_label.shadowColor, m_label.align, m_width);
- }
- else
- m_textLayout.RenderScrolling(m_posX, posY, 0, m_label.textColor, m_label.shadowColor, (m_label.align & ~3), m_width, m_scrollInfo);
- CServiceBroker::GetWinSystem()->GetGfxContext().RemoveTransform();
- CGUIControl::Render();
- }
- bool CGUIFadeLabelControl::CanFocus() const
- {
- return false;
- }
- bool CGUIFadeLabelControl::OnMessage(CGUIMessage& message)
- {
- if ( message.GetControlId() == GetID() )
- {
- if (message.GetMessage() == GUI_MSG_LABEL_ADD)
- {
- AddLabel(message.GetLabel());
- return true;
- }
- if (message.GetMessage() == GUI_MSG_LABEL_RESET)
- {
- m_lastLabel = -1;
- m_infoLabels.clear();
- m_allLabelsShown = true;
- m_scrollInfo.Reset();
- return true;
- }
- if (message.GetMessage() == GUI_MSG_LABEL_SET)
- {
- m_lastLabel = -1;
- m_infoLabels.clear();
- m_allLabelsShown = true;
- m_scrollInfo.Reset();
- AddLabel(message.GetLabel());
- return true;
- }
- }
- return CGUIControl::OnMessage(message);
- }
- std::string CGUIFadeLabelControl::GetDescription() const
- {
- return (m_currentLabel < m_infoLabels.size()) ? m_infoLabels[m_currentLabel].GetLabel(m_parentID) : "";
- }
- std::string CGUIFadeLabelControl::GetLabel()
- {
- if (m_currentLabel > m_infoLabels.size())
- m_currentLabel = 0;
- unsigned int numTries = 0;
- std::string label(m_infoLabels[m_currentLabel].GetLabel(m_parentID));
- while (label.empty() && ++numTries < m_infoLabels.size())
- {
- if (++m_currentLabel >= m_infoLabels.size())
- m_currentLabel = 0;
- label = m_infoLabels[m_currentLabel].GetLabel(m_parentID);
- }
- return label;
- }