void UILineEdit::update() { std::string text = getDisplayedText(); int textLength = text.length(); // prevent glitches if(m_rect.isEmpty()) return; // map glyphs positions Size textBoxSize; const std::vector<Point>& glyphsPositions = m_font->calculateGlyphsPositions(text, m_align, &textBoxSize); const Rect *glyphsTextureCoords = m_font->getGlyphsTextureCoords(); const Size *glyphsSize = m_font->getGlyphsSize(); int glyph; // resize just on demand if(textLength > (int)m_glyphsCoords.size()) { m_glyphsCoords.resize(textLength); m_glyphsTexCoords.resize(textLength); } // readjust start view area based on cursor position if(m_cursorPos >= 0 && textLength > 0) { assert(m_cursorPos <= textLength); if(m_cursorPos < m_startRenderPos) // cursor is before the previuos first rendered glyph, so we need to update { m_startInternalPos.x = glyphsPositions[m_cursorPos].x; m_startInternalPos.y = glyphsPositions[m_cursorPos].y - m_font->getYOffset(); m_startRenderPos = m_cursorPos; } else if(m_cursorPos > m_startRenderPos || // cursor is after the previuos first rendered glyph (m_cursorPos == m_startRenderPos && textLength == m_cursorPos)) // cursor is at the previuos rendered element, and is the last text element { Rect virtualRect(m_startInternalPos, m_rect.size() - Size(2*m_textHorizontalMargin, 0) ); // previous rendered virtual rect int pos = m_cursorPos - 1; // element before cursor glyph = (uchar)text[pos]; // glyph of the element before cursor Rect glyphRect(glyphsPositions[pos], glyphsSize[glyph]); // if the cursor is not on the previous rendered virtual rect we need to update it if(!virtualRect.contains(glyphRect.topLeft()) || !virtualRect.contains(glyphRect.bottomRight())) { // calculate where is the first glyph visible Point startGlyphPos; startGlyphPos.y = std::max(glyphRect.bottom() - virtualRect.height(), 0); startGlyphPos.x = std::max(glyphRect.right() - virtualRect.width(), 0); // find that glyph for(pos = 0; pos < textLength; ++pos) { glyph = (uchar)text[pos]; glyphRect = Rect(glyphsPositions[pos], glyphsSize[glyph]); glyphRect.setTop(std::max(glyphRect.top() - m_font->getYOffset() - m_font->getGlyphSpacing().height(), 0)); glyphRect.setLeft(std::max(glyphRect.left() - m_font->getGlyphSpacing().width(), 0)); // first glyph entirely visible found if(glyphRect.topLeft() >= startGlyphPos) { m_startInternalPos.x = glyphsPositions[pos].x; m_startInternalPos.y = glyphsPositions[pos].y - m_font->getYOffset(); m_startRenderPos = pos; break; } } } } } else { m_startInternalPos = Point(0,0); } Rect textScreenCoords = m_rect; textScreenCoords.addLeft(-m_textHorizontalMargin); textScreenCoords.addRight(-m_textHorizontalMargin); m_drawArea = textScreenCoords; if(m_align & Fw::AlignBottom) { m_drawArea.translate(0, textScreenCoords.height() - textBoxSize.height()); } else if(m_align & Fw::AlignVerticalCenter) { m_drawArea.translate(0, (textScreenCoords.height() - textBoxSize.height()) / 2); } else { // AlignTop } if(m_align & Fw::AlignRight) { m_drawArea.translate(textScreenCoords.width() - textBoxSize.width(), 0); } else if(m_align & Fw::AlignHorizontalCenter) { m_drawArea.translate((textScreenCoords.width() - textBoxSize.width()) / 2, 0); } else { // AlignLeft } for(int i = 0; i < textLength; ++i) { glyph = (uchar)text[i]; m_glyphsCoords[i].clear(); // skip invalid glyphs if(glyph < 32) continue; // calculate initial glyph rect and texture coords Rect glyphScreenCoords(glyphsPositions[i], glyphsSize[glyph]); Rect glyphTextureCoords = glyphsTextureCoords[glyph]; // first translate to align position if(m_align & Fw::AlignBottom) { glyphScreenCoords.translate(0, textScreenCoords.height() - textBoxSize.height()); } else if(m_align & Fw::AlignVerticalCenter) { glyphScreenCoords.translate(0, (textScreenCoords.height() - textBoxSize.height()) / 2); } else { // AlignTop // nothing to do } if(m_align & Fw::AlignRight) { glyphScreenCoords.translate(textScreenCoords.width() - textBoxSize.width(), 0); } else if(m_align & Fw::AlignHorizontalCenter) { glyphScreenCoords.translate((textScreenCoords.width() - textBoxSize.width()) / 2, 0); } else { // AlignLeft // nothing to do } // only render glyphs that are after startRenderPosition if(glyphScreenCoords.bottom() < m_startInternalPos.y || glyphScreenCoords.right() < m_startInternalPos.x) continue; // bound glyph topLeft to startRenderPosition if(glyphScreenCoords.top() < m_startInternalPos.y) { glyphTextureCoords.setTop(glyphTextureCoords.top() + (m_startInternalPos.y - glyphScreenCoords.top())); glyphScreenCoords.setTop(m_startInternalPos.y); } if(glyphScreenCoords.left() < m_startInternalPos.x) { glyphTextureCoords.setLeft(glyphTextureCoords.left() + (m_startInternalPos.x - glyphScreenCoords.left())); glyphScreenCoords.setLeft(m_startInternalPos.x); } // subtract startInternalPos glyphScreenCoords.translate(-m_startInternalPos); // translate rect to screen coords glyphScreenCoords.translate(textScreenCoords.topLeft()); // only render if glyph rect is visible on screenCoords if(!textScreenCoords.intersects(glyphScreenCoords)) continue; // bound glyph bottomRight to screenCoords bottomRight if(glyphScreenCoords.bottom() > textScreenCoords.bottom()) { glyphTextureCoords.setBottom(glyphTextureCoords.bottom() + (textScreenCoords.bottom() - glyphScreenCoords.bottom())); glyphScreenCoords.setBottom(textScreenCoords.bottom()); } if(glyphScreenCoords.right() > textScreenCoords.right()) { glyphTextureCoords.setRight(glyphTextureCoords.right() + (textScreenCoords.right() - glyphScreenCoords.right())); glyphScreenCoords.setRight(textScreenCoords.right()); } // render glyph m_glyphsCoords[i] = glyphScreenCoords; m_glyphsTexCoords[i] = glyphTextureCoords; } }
void BitmapFont::calculateDrawTextCoords(CoordsBuffer& coordsBuffer, const std::string& text, const Rect& screenCoords, Fw::AlignmentFlag align) { // prevent glitches from invalid rects if(!screenCoords.isValid() || !m_texture) return; int textLenght = text.length(); // map glyphs positions Size textBoxSize; const std::vector<Point>& glyphsPositions = calculateGlyphsPositions(text, align, &textBoxSize); for(int i = 0; i < textLenght; ++i) { int glyph = (uchar)text[i]; // skip invalid glyphs if(glyph < 32) continue; // calculate initial glyph rect and texture coords Rect glyphScreenCoords(glyphsPositions[i], m_glyphsSize[glyph]); Rect glyphTextureCoords = m_glyphsTextureCoords[glyph]; // first translate to align position if(align & Fw::AlignBottom) { glyphScreenCoords.translate(0, screenCoords.height() - textBoxSize.height()); } else if(align & Fw::AlignVerticalCenter) { glyphScreenCoords.translate(0, (screenCoords.height() - textBoxSize.height()) / 2); } else { // AlignTop // nothing to do } if(align & Fw::AlignRight) { glyphScreenCoords.translate(screenCoords.width() - textBoxSize.width(), 0); } else if(align & Fw::AlignHorizontalCenter) { glyphScreenCoords.translate((screenCoords.width() - textBoxSize.width()) / 2, 0); } else { // AlignLeft // nothing to do } // only render glyphs that are after 0, 0 if(glyphScreenCoords.bottom() < 0 || glyphScreenCoords.right() < 0) continue; // bound glyph topLeft to 0,0 if needed if(glyphScreenCoords.top() < 0) { glyphTextureCoords.setTop(glyphTextureCoords.top() - glyphScreenCoords.top()); glyphScreenCoords.setTop(0); } if(glyphScreenCoords.left() < 0) { glyphTextureCoords.setLeft(glyphTextureCoords.left() - glyphScreenCoords.left()); glyphScreenCoords.setLeft(0); } // translate rect to screen coords glyphScreenCoords.translate(screenCoords.topLeft()); // only render if glyph rect is visible on screenCoords if(!screenCoords.intersects(glyphScreenCoords)) continue; // bound glyph bottomRight to screenCoords bottomRight if(glyphScreenCoords.bottom() > screenCoords.bottom()) { glyphTextureCoords.setBottom(glyphTextureCoords.bottom() + (screenCoords.bottom() - glyphScreenCoords.bottom())); glyphScreenCoords.setBottom(screenCoords.bottom()); } if(glyphScreenCoords.right() > screenCoords.right()) { glyphTextureCoords.setRight(glyphTextureCoords.right() + (screenCoords.right() - glyphScreenCoords.right())); glyphScreenCoords.setRight(screenCoords.right()); } // render glyph coordsBuffer.addRect(glyphScreenCoords, glyphTextureCoords); } }
void UITextEdit::update(bool focusCursor) { if(!m_updatesEnabled) return; std::string text = getDisplayedText(); m_drawText = text; int textLength = text.length(); // prevent glitches if(m_rect.isEmpty()) return; // map glyphs positions Size textBoxSize; const std::vector<Point>& glyphsPositions = m_font->calculateGlyphsPositions(text, m_textAlign, &textBoxSize); const Rect *glyphsTextureCoords = m_font->getGlyphsTextureCoords(); const Size *glyphsSize = m_font->getGlyphsSize(); int glyph; // update rect size if(!m_rect.isValid() || m_textHorizontalAutoResize || m_textVerticalAutoResize) { textBoxSize += Size(m_padding.left + m_padding.right, m_padding.top + m_padding.bottom) + m_textOffset.toSize(); Size size = getSize(); if(size.width() <= 0 || (m_textHorizontalAutoResize && !m_textWrap)) size.setWidth(textBoxSize.width()); if(size.height() <= 0 || m_textVerticalAutoResize) size.setHeight(textBoxSize.height()); setSize(size); } // resize just on demand if(textLength > (int)m_glyphsCoords.size()) { m_glyphsCoords.resize(textLength); m_glyphsTexCoords.resize(textLength); } Point oldTextAreaOffset = m_textVirtualOffset; if(textBoxSize.width() <= getPaddingRect().width()) m_textVirtualOffset.x = 0; if(textBoxSize.height() <= getPaddingRect().height()) m_textVirtualOffset.y = 0; // readjust start view area based on cursor position m_cursorInRange = false; if(focusCursor && m_autoScroll) { if(m_cursorPos > 0 && textLength > 0) { assert(m_cursorPos <= textLength); Rect virtualRect(m_textVirtualOffset, m_rect.size() - Size(m_padding.left+m_padding.right, 0)); // previous rendered virtual rect int pos = m_cursorPos - 1; // element before cursor glyph = (uchar)text[pos]; // glyph of the element before cursor Rect glyphRect(glyphsPositions[pos], glyphsSize[glyph]); // if the cursor is not on the previous rendered virtual rect we need to update it if(!virtualRect.contains(glyphRect.topLeft()) || !virtualRect.contains(glyphRect.bottomRight())) { // calculate where is the first glyph visible Point startGlyphPos; startGlyphPos.y = std::max(glyphRect.bottom() - virtualRect.height(), 0); startGlyphPos.x = std::max(glyphRect.right() - virtualRect.width(), 0); // find that glyph for(pos = 0; pos < textLength; ++pos) { glyph = (uchar)text[pos]; glyphRect = Rect(glyphsPositions[pos], glyphsSize[glyph]); glyphRect.setTop(std::max(glyphRect.top() - m_font->getYOffset() - m_font->getGlyphSpacing().height(), 0)); glyphRect.setLeft(std::max(glyphRect.left() - m_font->getGlyphSpacing().width(), 0)); // first glyph entirely visible found if(glyphRect.topLeft() >= startGlyphPos) { m_textVirtualOffset.x = glyphsPositions[pos].x; m_textVirtualOffset.y = glyphsPositions[pos].y - m_font->getYOffset(); break; } } } } else { m_textVirtualOffset = Point(0,0); } m_cursorInRange = true; } else { if(m_cursorPos > 0 && textLength > 0) { Rect virtualRect(m_textVirtualOffset, m_rect.size() - Size(2*m_padding.left+m_padding.right, 0) ); // previous rendered virtual rect int pos = m_cursorPos - 1; // element before cursor glyph = (uchar)text[pos]; // glyph of the element before cursor Rect glyphRect(glyphsPositions[pos], glyphsSize[glyph]); if(virtualRect.contains(glyphRect.topLeft()) && virtualRect.contains(glyphRect.bottomRight())) m_cursorInRange = true; } else { m_cursorInRange = true; } } bool fireAreaUpdate = false; if(oldTextAreaOffset != m_textVirtualOffset) fireAreaUpdate = true; Rect textScreenCoords = m_rect; textScreenCoords.expandLeft(-m_padding.left); textScreenCoords.expandRight(-m_padding.right); textScreenCoords.expandBottom(-m_padding.bottom); textScreenCoords.expandTop(-m_padding.top); m_drawArea = textScreenCoords; if(textScreenCoords.size() != m_textVirtualSize) { m_textVirtualSize = textScreenCoords.size(); fireAreaUpdate = true; } Size totalSize = textBoxSize; if(totalSize.width() < m_textVirtualSize.width()) totalSize.setWidth(m_textVirtualSize.height()); if(totalSize.height() < m_textVirtualSize.height()) totalSize.setHeight(m_textVirtualSize.height()); if(m_textTotalSize != totalSize) { m_textTotalSize = totalSize; fireAreaUpdate = true; } if(m_textAlign & Fw::AlignBottom) { m_drawArea.translate(0, textScreenCoords.height() - textBoxSize.height()); } else if(m_textAlign & Fw::AlignVerticalCenter) { m_drawArea.translate(0, (textScreenCoords.height() - textBoxSize.height()) / 2); } else { // AlignTop } if(m_textAlign & Fw::AlignRight) { m_drawArea.translate(textScreenCoords.width() - textBoxSize.width(), 0); } else if(m_textAlign & Fw::AlignHorizontalCenter) { m_drawArea.translate((textScreenCoords.width() - textBoxSize.width()) / 2, 0); } else { // AlignLeft } for(int i = 0; i < textLength; ++i) { glyph = (uchar)text[i]; m_glyphsCoords[i].clear(); // skip invalid glyphs if(glyph < 32 && glyph != (uchar)'\n') continue; // calculate initial glyph rect and texture coords Rect glyphScreenCoords(glyphsPositions[i], glyphsSize[glyph]); Rect glyphTextureCoords = glyphsTextureCoords[glyph]; // first translate to align position if(m_textAlign & Fw::AlignBottom) { glyphScreenCoords.translate(0, textScreenCoords.height() - textBoxSize.height()); } else if(m_textAlign & Fw::AlignVerticalCenter) { glyphScreenCoords.translate(0, (textScreenCoords.height() - textBoxSize.height()) / 2); } else { // AlignTop // nothing to do } if(m_textAlign & Fw::AlignRight) { glyphScreenCoords.translate(textScreenCoords.width() - textBoxSize.width(), 0); } else if(m_textAlign & Fw::AlignHorizontalCenter) { glyphScreenCoords.translate((textScreenCoords.width() - textBoxSize.width()) / 2, 0); } else { // AlignLeft // nothing to do } // only render glyphs that are after startRenderPosition if(glyphScreenCoords.bottom() < m_textVirtualOffset.y || glyphScreenCoords.right() < m_textVirtualOffset.x) continue; // bound glyph topLeft to startRenderPosition if(glyphScreenCoords.top() < m_textVirtualOffset.y) { glyphTextureCoords.setTop(glyphTextureCoords.top() + (m_textVirtualOffset.y - glyphScreenCoords.top())); glyphScreenCoords.setTop(m_textVirtualOffset.y); } if(glyphScreenCoords.left() < m_textVirtualOffset.x) { glyphTextureCoords.setLeft(glyphTextureCoords.left() + (m_textVirtualOffset.x - glyphScreenCoords.left())); glyphScreenCoords.setLeft(m_textVirtualOffset.x); } // subtract startInternalPos glyphScreenCoords.translate(-m_textVirtualOffset); // translate rect to screen coords glyphScreenCoords.translate(textScreenCoords.topLeft()); // only render if glyph rect is visible on screenCoords if(!textScreenCoords.intersects(glyphScreenCoords)) continue; // bound glyph bottomRight to screenCoords bottomRight if(glyphScreenCoords.bottom() > textScreenCoords.bottom()) { glyphTextureCoords.setBottom(glyphTextureCoords.bottom() + (textScreenCoords.bottom() - glyphScreenCoords.bottom())); glyphScreenCoords.setBottom(textScreenCoords.bottom()); } if(glyphScreenCoords.right() > textScreenCoords.right()) { glyphTextureCoords.setRight(glyphTextureCoords.right() + (textScreenCoords.right() - glyphScreenCoords.right())); glyphScreenCoords.setRight(textScreenCoords.right()); } // render glyph m_glyphsCoords[i] = glyphScreenCoords; m_glyphsTexCoords[i] = glyphTextureCoords; } if(fireAreaUpdate) onTextAreaUpdate(m_textVirtualOffset, m_textVirtualSize, m_textTotalSize); g_app.repaint(); }