kornes
858 lines
24 KiB
C++
858 lines
24 KiB
C++
#include "MessageLayoutContainer.hpp"
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#include "Application.hpp"
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#include "messages/Message.hpp"
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#include "messages/MessageElement.hpp"
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#include "messages/Selection.hpp"
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#include "messages/layouts/MessageLayoutElement.hpp"
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#include "singletons/Fonts.hpp"
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#include "singletons/Settings.hpp"
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#include "singletons/Theme.hpp"
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#include "util/Helpers.hpp"
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#include <QDebug>
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#include <QPainter>
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#define COMPACT_EMOTES_OFFSET 4
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#define MAX_UNCOLLAPSED_LINES \
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(getSettings()->collpseMessagesMinLines.getValue())
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namespace chatterino {
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int MessageLayoutContainer::getHeight() const
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{
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return this->height_;
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}
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int MessageLayoutContainer::getWidth() const
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{
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return this->width_;
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}
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float MessageLayoutContainer::getScale() const
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{
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return this->scale_;
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}
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// methods
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void MessageLayoutContainer::begin(int width, float scale, MessageFlags flags)
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{
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this->clear();
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this->width_ = width;
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this->scale_ = scale;
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this->flags_ = flags;
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auto mediumFontMetrics =
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getApp()->fonts->getFontMetrics(FontStyle::ChatMedium, scale);
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this->textLineHeight_ = mediumFontMetrics.height();
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this->spaceWidth_ = mediumFontMetrics.horizontalAdvance(' ');
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this->dotdotdotWidth_ = mediumFontMetrics.horizontalAdvance("...");
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this->canAddMessages_ = true;
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this->isCollapsed_ = false;
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}
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void MessageLayoutContainer::clear()
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{
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this->elements_.clear();
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this->lines_.clear();
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this->height_ = 0;
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this->line_ = 0;
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this->currentX_ = 0;
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this->currentY_ = 0;
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this->lineStart_ = 0;
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this->lineHeight_ = 0;
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this->charIndex_ = 0;
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}
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void MessageLayoutContainer::addElement(MessageLayoutElement *element)
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{
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bool isZeroWidth =
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element->getFlags().has(MessageElementFlag::ZeroWidthEmote);
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if (!isZeroWidth && !this->fitsInLine(element->getRect().width()))
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{
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this->breakLine();
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}
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this->_addElement(element);
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}
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void MessageLayoutContainer::addElementNoLineBreak(
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MessageLayoutElement *element)
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{
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this->_addElement(element);
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}
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bool MessageLayoutContainer::canAddElements()
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{
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return this->canAddMessages_;
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}
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void MessageLayoutContainer::_addElement(MessageLayoutElement *element,
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bool forceAdd, int prevIndex)
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{
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if (!this->canAddElements() && !forceAdd)
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{
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delete element;
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return;
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}
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bool isRTLMode = this->first == FirstWord::RTL && prevIndex != -2;
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bool isAddingMode = prevIndex == -2;
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// This lambda contains the logic for when to step one 'space width' back for compact x emotes
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auto shouldRemoveSpaceBetweenEmotes = [this, prevIndex]() -> bool {
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if (prevIndex == -1 || this->elements_.empty())
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{
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// No previous element found
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return false;
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}
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const auto &lastElement = prevIndex == -2 ? this->elements_.back()
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: this->elements_[prevIndex];
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if (!lastElement)
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{
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return false;
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}
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if (!lastElement->hasTrailingSpace())
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{
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// Last element did not have a trailing space, so we don't need to do anything.
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return false;
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}
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if (lastElement->getLine() != this->line_)
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{
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// Last element was not on the same line as us
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return false;
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}
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// Returns true if the last element was an emote image
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return lastElement->getFlags().has(MessageElementFlag::EmoteImages);
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};
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if (element->getText().isRightToLeft())
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{
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this->containsRTL = true;
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}
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// check the first non-neutral word to see if we should render RTL or LTR
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if (isAddingMode && this->first == FirstWord::Neutral &&
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element->getFlags().has(MessageElementFlag::Text) &&
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!element->getFlags().has(MessageElementFlag::RepliedMessage))
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{
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if (element->getText().isRightToLeft())
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{
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this->first = FirstWord::RTL;
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}
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else if (!isNeutral(element->getText()))
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{
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this->first = FirstWord::LTR;
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}
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}
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// top margin
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if (this->elements_.size() == 0)
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{
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this->currentY_ = int(this->margin.top * this->scale_);
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}
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int elementLineHeight = element->getRect().height();
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// compact emote offset
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bool isCompactEmote =
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!this->flags_.has(MessageFlag::DisableCompactEmotes) &&
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element->getCreator().getFlags().has(MessageElementFlag::EmoteImages);
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if (isCompactEmote)
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{
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elementLineHeight -= COMPACT_EMOTES_OFFSET * this->scale_;
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}
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// update line height
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this->lineHeight_ = std::max(this->lineHeight_, elementLineHeight);
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auto xOffset = 0;
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bool isZeroWidthEmote = element->getCreator().getFlags().has(
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MessageElementFlag::ZeroWidthEmote);
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if (isZeroWidthEmote && !isRTLMode)
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{
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xOffset -= element->getRect().width() + this->spaceWidth_;
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}
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auto yOffset = 0;
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if (element->getCreator().getFlags().has(
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MessageElementFlag::ChannelPointReward) &&
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element->getCreator().getFlags().hasNone(
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{MessageElementFlag::TwitchEmoteImage}))
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{
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yOffset -= (this->margin.top * this->scale_);
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}
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if (getSettings()->removeSpacesBetweenEmotes &&
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element->getFlags().hasAny({MessageElementFlag::EmoteImages}) &&
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!isZeroWidthEmote && shouldRemoveSpaceBetweenEmotes())
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{
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// Move cursor one 'space width' to the left (right in case of RTL) to combine hug the previous emote
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if (isRTLMode)
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{
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this->currentX_ += this->spaceWidth_;
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}
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else
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{
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this->currentX_ -= this->spaceWidth_;
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}
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}
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if (isRTLMode)
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{
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// shift by width since we are calculating according to top right in RTL mode
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// but setPosition wants top left
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xOffset -= element->getRect().width();
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}
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// set move element
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element->setPosition(
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QPoint(this->currentX_ + xOffset,
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this->currentY_ - element->getRect().height() + yOffset));
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element->setLine(this->line_);
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// add element
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if (isAddingMode)
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{
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this->elements_.push_back(
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std::unique_ptr<MessageLayoutElement>(element));
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}
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// set current x
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if (!isZeroWidthEmote)
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{
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if (isRTLMode)
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{
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this->currentX_ -= element->getRect().width();
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}
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else
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{
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this->currentX_ += element->getRect().width();
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}
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}
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if (element->hasTrailingSpace())
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{
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if (isRTLMode)
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{
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this->currentX_ -= this->spaceWidth_;
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}
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else
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{
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this->currentX_ += this->spaceWidth_;
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}
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}
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}
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void MessageLayoutContainer::reorderRTL(int firstTextIndex)
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{
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if (this->elements_.empty())
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{
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return;
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}
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int startIndex = static_cast<int>(this->lineStart_);
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int endIndex = static_cast<int>(this->elements_.size()) - 1;
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if (firstTextIndex >= endIndex)
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{
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return;
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}
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startIndex = std::max(startIndex, firstTextIndex);
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std::vector<int> correctSequence;
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std::stack<int> swappedSequence;
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bool wasPrevReversed = false;
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// we reverse a sequence of words if it's opposite to the text direction
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// the second condition below covers the possible three cases:
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// 1 - if we are in RTL mode (first non-neutral word is RTL)
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// we render RTL, reversing LTR sequences,
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// 2 - if we are in LTR mode (first non-neutral word is LTR or all words are neutral)
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// we render LTR, reversing RTL sequences
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// 3 - neutral words follow previous words, we reverse a neutral word when the previous word was reversed
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// the first condition checks if a neutral word is treated as a RTL word
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// this is used later to add U+202B (RTL embedding) character signal to
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// fix punctuation marks and mixing embedding LTR in an RTL word
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// this can happen in two cases:
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// 1 - in RTL mode, the previous word should be RTL (i.e. not reversed)
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// 2 - in LTR mode, the previous word should be RTL (i.e. reversed)
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for (int i = startIndex; i <= endIndex; i++)
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{
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if (isNeutral(this->elements_[i]->getText()) &&
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((this->first == FirstWord::RTL && !wasPrevReversed) ||
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(this->first == FirstWord::LTR && wasPrevReversed)))
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{
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this->elements_[i]->reversedNeutral = true;
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}
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if (((this->elements_[i]->getText().isRightToLeft() !=
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(this->first == FirstWord::RTL)) &&
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!isNeutral(this->elements_[i]->getText())) ||
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(isNeutral(this->elements_[i]->getText()) && wasPrevReversed))
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{
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swappedSequence.push(i);
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wasPrevReversed = true;
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}
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else
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{
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while (!swappedSequence.empty())
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{
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correctSequence.push_back(swappedSequence.top());
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swappedSequence.pop();
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}
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correctSequence.push_back(i);
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wasPrevReversed = false;
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}
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}
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while (!swappedSequence.empty())
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{
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correctSequence.push_back(swappedSequence.top());
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swappedSequence.pop();
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}
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// render right to left if we are in RTL mode, otherwise LTR
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if (this->first == FirstWord::RTL)
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{
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this->currentX_ = this->elements_[endIndex]->getRect().right();
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}
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else
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{
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this->currentX_ = this->elements_[startIndex]->getRect().left();
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}
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// manually do the first call with -1 as previous index
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this->_addElement(this->elements_[correctSequence[0]].get(), false, -1);
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for (int i = 1; i < correctSequence.size(); i++)
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{
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this->_addElement(this->elements_[correctSequence[i]].get(), false,
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correctSequence[i - 1]);
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}
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}
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void MessageLayoutContainer::breakLine()
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{
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if (this->containsRTL)
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{
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for (int i = 0; i < this->elements_.size(); i++)
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{
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if (this->elements_[i]->getFlags().has(
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MessageElementFlag::Username))
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{
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this->reorderRTL(i + 1);
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break;
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}
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}
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}
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int xOffset = 0;
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if (this->flags_.has(MessageFlag::Centered) && this->elements_.size() > 0)
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{
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const int marginOffset = int(this->margin.left * this->scale_) +
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int(this->margin.right * this->scale_);
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xOffset = (width_ - marginOffset -
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this->elements_.at(this->elements_.size() - 1)
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->getRect()
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.right()) /
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2;
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}
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for (size_t i = lineStart_; i < this->elements_.size(); i++)
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{
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MessageLayoutElement *element = this->elements_.at(i).get();
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bool isCompactEmote =
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!this->flags_.has(MessageFlag::DisableCompactEmotes) &&
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element->getCreator().getFlags().has(
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MessageElementFlag::EmoteImages);
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int yExtra = 0;
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if (isCompactEmote)
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{
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yExtra = (COMPACT_EMOTES_OFFSET / 2) * this->scale_;
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}
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element->setPosition(
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QPoint(element->getRect().x() + xOffset +
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int(this->margin.left * this->scale_),
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element->getRect().y() + this->lineHeight_ + yExtra));
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}
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if (this->lines_.size() != 0)
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{
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this->lines_.back().endIndex = this->lineStart_;
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this->lines_.back().endCharIndex = this->charIndex_;
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}
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this->lines_.push_back(
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{(int)lineStart_, 0, this->charIndex_, 0,
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QRect(-100000, this->currentY_, 200000, lineHeight_)});
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for (int i = this->lineStart_; i < this->elements_.size(); i++)
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{
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this->charIndex_ += this->elements_[i]->getSelectionIndexCount();
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}
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this->lineStart_ = this->elements_.size();
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// this->currentX = (int)(this->scale * 8);
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if (this->canCollapse() && line_ + 1 >= MAX_UNCOLLAPSED_LINES)
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{
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this->canAddMessages_ = false;
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return;
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}
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this->currentX_ = 0;
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this->currentY_ += this->lineHeight_;
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this->height_ = this->currentY_ + int(this->margin.bottom * this->scale_);
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this->lineHeight_ = 0;
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this->line_++;
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}
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bool MessageLayoutContainer::atStartOfLine()
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{
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return this->lineStart_ == this->elements_.size();
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}
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bool MessageLayoutContainer::fitsInLine(int _width)
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{
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return this->currentX_ + _width <=
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(this->width_ - int(this->margin.left * this->scale_) -
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int(this->margin.right * this->scale_) -
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(this->line_ + 1 == MAX_UNCOLLAPSED_LINES ? this->dotdotdotWidth_
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: 0));
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}
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void MessageLayoutContainer::end()
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{
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if (!this->canAddElements())
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{
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static TextElement dotdotdot("...", MessageElementFlag::Collapsed,
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MessageColor::Link);
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static QString dotdotdotText("...");
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auto *element = new TextLayoutElement(
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dotdotdot, dotdotdotText,
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QSize(this->dotdotdotWidth_, this->textLineHeight_),
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QColor("#00D80A"), FontStyle::ChatMediumBold, this->scale_);
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// getApp()->themes->messages.textColors.system
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this->_addElement(element, true);
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this->isCollapsed_ = true;
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}
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if (!this->atStartOfLine())
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{
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this->breakLine();
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}
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this->height_ += this->lineHeight_;
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if (this->lines_.size() != 0)
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{
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this->lines_[0].rect.setTop(-100000);
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this->lines_.back().rect.setBottom(100000);
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this->lines_.back().endIndex = this->elements_.size();
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this->lines_.back().endCharIndex = this->charIndex_;
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}
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}
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bool MessageLayoutContainer::canCollapse()
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{
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return getSettings()->collpseMessagesMinLines.getValue() > 0 &&
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this->flags_.has(MessageFlag::Collapsed);
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}
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bool MessageLayoutContainer::isCollapsed()
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{
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return this->isCollapsed_;
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}
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MessageLayoutElement *MessageLayoutContainer::getElementAt(QPoint point)
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{
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for (std::unique_ptr<MessageLayoutElement> &element : this->elements_)
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{
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if (element->getRect().contains(point))
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{
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return element.get();
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}
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}
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return nullptr;
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}
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// painting
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void MessageLayoutContainer::paintElements(QPainter &painter)
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{
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for (const std::unique_ptr<MessageLayoutElement> &element : this->elements_)
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{
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#ifdef FOURTF
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painter.setPen(QColor(0, 255, 0));
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painter.drawRect(element->getRect());
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#endif
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element->paint(painter);
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}
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}
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void MessageLayoutContainer::paintAnimatedElements(QPainter &painter,
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int yOffset)
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{
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for (const std::unique_ptr<MessageLayoutElement> &element : this->elements_)
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{
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element->paintAnimated(painter, yOffset);
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}
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}
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void MessageLayoutContainer::paintSelection(QPainter &painter, int messageIndex,
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Selection &selection, int yOffset)
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{
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auto app = getApp();
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QColor selectionColor = app->themes->messages.selection;
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// don't draw anything
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if (selection.selectionMin.messageIndex > messageIndex ||
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selection.selectionMax.messageIndex < messageIndex)
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{
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return;
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}
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// fully selected
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if (selection.selectionMin.messageIndex < messageIndex &&
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selection.selectionMax.messageIndex > messageIndex)
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{
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for (Line &line : this->lines_)
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{
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QRect rect = line.rect;
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rect.setTop(std::max(0, rect.top()) + yOffset);
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rect.setBottom(std::min(this->height_, rect.bottom()) + yOffset);
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rect.setLeft(this->elements_[line.startIndex]->getRect().left());
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rect.setRight(
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this->elements_[line.endIndex - 1]->getRect().right());
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painter.fillRect(rect, selectionColor);
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}
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return;
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}
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int lineIndex = 0;
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int index = 0;
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// start in this message
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if (selection.selectionMin.messageIndex == messageIndex)
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{
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for (; lineIndex < this->lines_.size(); lineIndex++)
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{
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Line &line = this->lines_[lineIndex];
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index = line.startCharIndex;
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bool returnAfter = false;
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bool breakAfter = false;
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int x = this->elements_[line.startIndex]->getRect().left();
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int r = this->elements_[line.endIndex - 1]->getRect().right();
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if (line.endCharIndex <= selection.selectionMin.charIndex)
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{
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continue;
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}
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for (int i = line.startIndex; i < line.endIndex; i++)
|
|
{
|
|
int c = this->elements_[i]->getSelectionIndexCount();
|
|
|
|
if (index + c > selection.selectionMin.charIndex)
|
|
{
|
|
x = this->elements_[i]->getXFromIndex(
|
|
selection.selectionMin.charIndex - index);
|
|
|
|
// ends in same line
|
|
if (selection.selectionMax.messageIndex == messageIndex &&
|
|
line.endCharIndex >
|
|
/*=*/selection.selectionMax.charIndex)
|
|
{
|
|
returnAfter = true;
|
|
index = line.startCharIndex;
|
|
for (int i = line.startIndex; i < line.endIndex; i++)
|
|
{
|
|
int c =
|
|
this->elements_[i]->getSelectionIndexCount();
|
|
|
|
if (index + c > selection.selectionMax.charIndex)
|
|
{
|
|
r = this->elements_[i]->getXFromIndex(
|
|
selection.selectionMax.charIndex - index);
|
|
break;
|
|
}
|
|
index += c;
|
|
}
|
|
}
|
|
// ends in same line end
|
|
|
|
if (selection.selectionMax.messageIndex != messageIndex)
|
|
{
|
|
int lineIndex2 = lineIndex + 1;
|
|
for (; lineIndex2 < this->lines_.size(); lineIndex2++)
|
|
{
|
|
Line &line2 = this->lines_[lineIndex2];
|
|
QRect rect = line2.rect;
|
|
|
|
rect.setTop(std::max(0, rect.top()) + yOffset);
|
|
rect.setBottom(
|
|
std::min(this->height_, rect.bottom()) +
|
|
yOffset);
|
|
rect.setLeft(this->elements_[line2.startIndex]
|
|
->getRect()
|
|
.left());
|
|
rect.setRight(this->elements_[line2.endIndex - 1]
|
|
->getRect()
|
|
.right());
|
|
|
|
painter.fillRect(rect, selectionColor);
|
|
}
|
|
returnAfter = true;
|
|
}
|
|
else
|
|
{
|
|
lineIndex++;
|
|
breakAfter = true;
|
|
}
|
|
|
|
break;
|
|
}
|
|
index += c;
|
|
}
|
|
|
|
QRect rect = line.rect;
|
|
|
|
rect.setTop(std::max(0, rect.top()) + yOffset);
|
|
rect.setBottom(std::min(this->height_, rect.bottom()) + yOffset);
|
|
rect.setLeft(x);
|
|
rect.setRight(r);
|
|
|
|
painter.fillRect(rect, selectionColor);
|
|
|
|
if (returnAfter)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (breakAfter)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// start in this message
|
|
for (; lineIndex < this->lines_.size(); lineIndex++)
|
|
{
|
|
Line &line = this->lines_[lineIndex];
|
|
index = line.startCharIndex;
|
|
|
|
// just draw the garbage
|
|
if (line.endCharIndex < /*=*/selection.selectionMax.charIndex)
|
|
{
|
|
QRect rect = line.rect;
|
|
|
|
rect.setTop(std::max(0, rect.top()) + yOffset);
|
|
rect.setBottom(std::min(this->height_, rect.bottom()) + yOffset);
|
|
rect.setLeft(this->elements_[line.startIndex]->getRect().left());
|
|
rect.setRight(
|
|
this->elements_[line.endIndex - 1]->getRect().right());
|
|
|
|
painter.fillRect(rect, selectionColor);
|
|
continue;
|
|
}
|
|
|
|
int r = this->elements_[line.endIndex - 1]->getRect().right();
|
|
|
|
for (int i = line.startIndex; i < line.endIndex; i++)
|
|
{
|
|
int c = this->elements_[i]->getSelectionIndexCount();
|
|
|
|
if (index + c > selection.selectionMax.charIndex)
|
|
{
|
|
r = this->elements_[i]->getXFromIndex(
|
|
selection.selectionMax.charIndex - index);
|
|
break;
|
|
}
|
|
|
|
index += c;
|
|
}
|
|
|
|
QRect rect = line.rect;
|
|
|
|
rect.setTop(std::max(0, rect.top()) + yOffset);
|
|
rect.setBottom(std::min(this->height_, rect.bottom()) + yOffset);
|
|
rect.setLeft(this->elements_[line.startIndex]->getRect().left());
|
|
rect.setRight(r);
|
|
|
|
painter.fillRect(rect, selectionColor);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// selection
|
|
int MessageLayoutContainer::getSelectionIndex(QPoint point)
|
|
{
|
|
if (this->elements_.size() == 0)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
auto line = this->lines_.begin();
|
|
|
|
for (; line != this->lines_.end(); line++)
|
|
{
|
|
if (line->rect.contains(point))
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
int lineStart = line == this->lines_.end() ? this->lines_.back().startIndex
|
|
: line->startIndex;
|
|
if (line != this->lines_.end())
|
|
{
|
|
line++;
|
|
}
|
|
int lineEnd =
|
|
line == this->lines_.end() ? this->elements_.size() : line->startIndex;
|
|
|
|
int index = 0;
|
|
|
|
for (int i = 0; i < lineEnd; i++)
|
|
{
|
|
auto &&element = this->elements_[i];
|
|
|
|
// end of line
|
|
if (i == lineEnd)
|
|
{
|
|
break;
|
|
}
|
|
|
|
// before line
|
|
if (i < lineStart)
|
|
{
|
|
index += element->getSelectionIndexCount();
|
|
continue;
|
|
}
|
|
|
|
// this is the word
|
|
auto rightMargin = element->hasTrailingSpace() ? this->spaceWidth_ : 0;
|
|
|
|
if (point.x() <= element->getRect().right() + rightMargin)
|
|
{
|
|
index += element->getMouseOverIndex(point);
|
|
break;
|
|
}
|
|
|
|
index += element->getSelectionIndexCount();
|
|
}
|
|
|
|
return index;
|
|
}
|
|
|
|
// fourtf: no idea if this is acurate LOL
|
|
int MessageLayoutContainer::getLastCharacterIndex() const
|
|
{
|
|
if (this->lines_.size() == 0)
|
|
{
|
|
return 0;
|
|
}
|
|
return this->lines_.back().endCharIndex;
|
|
}
|
|
|
|
int MessageLayoutContainer::getFirstMessageCharacterIndex() const
|
|
{
|
|
static FlagsEnum<MessageElementFlag> skippedFlags;
|
|
skippedFlags.set(MessageElementFlag::RepliedMessage);
|
|
skippedFlags.set(MessageElementFlag::Timestamp);
|
|
skippedFlags.set(MessageElementFlag::Badges);
|
|
skippedFlags.set(MessageElementFlag::Username);
|
|
|
|
// Get the index of the first character of the real message
|
|
int index = 0;
|
|
for (auto &element : this->elements_)
|
|
{
|
|
if (element->getFlags().hasAny(skippedFlags))
|
|
{
|
|
index += element->getSelectionIndexCount();
|
|
}
|
|
else
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
return index;
|
|
}
|
|
|
|
void MessageLayoutContainer::addSelectionText(QString &str, int from, int to,
|
|
CopyMode copymode)
|
|
{
|
|
int index = 0;
|
|
bool first = true;
|
|
|
|
for (auto &element : this->elements_)
|
|
{
|
|
if (copymode != CopyMode::Everything &&
|
|
element->getCreator().getFlags().has(
|
|
MessageElementFlag::RepliedMessage))
|
|
{
|
|
// Don't include the message being replied to
|
|
continue;
|
|
}
|
|
|
|
if (copymode == CopyMode::OnlyTextAndEmotes)
|
|
{
|
|
if (element->getCreator().getFlags().hasAny(
|
|
{MessageElementFlag::Timestamp,
|
|
MessageElementFlag::Username, MessageElementFlag::Badges}))
|
|
continue;
|
|
}
|
|
|
|
auto indexCount = element->getSelectionIndexCount();
|
|
|
|
if (first)
|
|
{
|
|
if (index + indexCount > from)
|
|
{
|
|
element->addCopyTextToString(str, from - index, to - index);
|
|
first = false;
|
|
|
|
if (index + indexCount > to)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (index + indexCount > to)
|
|
{
|
|
element->addCopyTextToString(str, 0, to - index);
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
element->addCopyTextToString(str);
|
|
}
|
|
}
|
|
|
|
index += indexCount;
|
|
}
|
|
}
|
|
|
|
} // namespace chatterino
|