tibia-client/src/framework/ui/uitextedit.cpp

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/*
* Copyright (c) 2010-2012 OTClient <https://github.com/edubart/otclient>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "uitextedit.h"
#include <framework/graphics/bitmapfont.h>
#include <framework/graphics/graphics.h>
#include <framework/platform/platformwindow.h>
#include <framework/core/clock.h>
#include <framework/otml/otmlnode.h>
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#include <framework/application.h>
UITextEdit::UITextEdit()
{
m_cursorPos = 0;
m_textAlign = Fw::AlignTopLeft;
m_startRenderPos = 0;
m_textHorizontalMargin = 0;
m_textHidden = false;
m_shiftNavigation = false;
m_multiline = false;
m_maxLength = 0;
blinkCursor();
}
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void UITextEdit::drawSelf(Fw::DrawPane drawPane)
{
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if((drawPane & Fw::ForegroundPane) == 0)
return;
drawBackground(m_rect);
drawBorder(m_rect);
drawImage(m_rect);
drawIcon(m_rect);
//TODO: text rendering could be much optimized by using vertex buffer or caching the render into a texture
int textLength = m_text.length();
const TexturePtr& texture = m_font->getTexture();
g_painter->setColor(m_color);
for(int i=0;i<textLength;++i)
g_painter->drawTexturedRect(m_glyphsCoords[i], texture, m_glyphsTexCoords[i]);
// render cursor
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if(isExplicitlyEnabled() && isActive() && m_cursorPos >= 0) {
assert(m_cursorPos <= textLength);
// draw every 333ms
const int delay = 333;
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int elapsed = g_clock.millis() - m_cursorTicks;
if(elapsed <= delay) {
Rect cursorRect;
// when cursor is at 0 or is the first visible element
if(m_cursorPos == 0 || m_cursorPos == m_startRenderPos)
cursorRect = Rect(m_drawArea.left()-1, m_drawArea.top(), 1, m_font->getGlyphHeight());
else
cursorRect = Rect(m_glyphsCoords[m_cursorPos-1].right(), m_glyphsCoords[m_cursorPos-1].top(), 1, m_font->getGlyphHeight());
g_painter->drawFilledRect(cursorRect);
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} else if(elapsed >= 2*delay) {
m_cursorTicks = g_clock.millis();
}
}
}
void UITextEdit::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_textAlign, &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 previous 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 previous first rendered glyph
(m_cursorPos == m_startRenderPos && textLength == m_cursorPos)) // cursor is at the previous 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.expandLeft(-m_textHorizontalMargin);
textScreenCoords.expandRight(-m_textHorizontalMargin);
textScreenCoords.expandLeft(-m_textOffset.x);
textScreenCoords.translate(0, m_textOffset.y);
m_drawArea = textScreenCoords;
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_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 UITextEdit::setTextHorizontalMargin(int margin)
{
m_textHorizontalMargin = margin;
update();
}
void UITextEdit::setCursorPos(int pos)
{
if(pos != m_cursorPos) {
if(pos < 0)
m_cursorPos = 0;
else if((uint)pos >= m_text.length())
m_cursorPos = m_text.length();
else
m_cursorPos = pos;
update();
g_app.repaint();
}
}
void UITextEdit::setCursorEnabled(bool enable)
{
if(enable) {
m_cursorPos = 0;
blinkCursor();
} else
m_cursorPos = -1;
update();
}
void UITextEdit::setTextHidden(bool hidden)
{
m_textHidden = true;
update();
}
void UITextEdit::appendText(std::string text)
{
if(m_cursorPos >= 0) {
// replace characters that are now allowed
if(!m_multiline)
boost::replace_all(text, "\n", "");
boost::replace_all(text, "\r", " ");
if(text.length() > 0) {
// only add text if textedit can add it
if(m_maxLength > 0 && m_text.length() + text.length() > m_maxLength)
return;
// only ignore text append if it contains invalid characters
if(m_validCharacters.size() > 0) {
for(uint i = 0; i < text.size(); ++i) {
if(m_validCharacters.find(text[i]) == std::string::npos)
return;
}
}
std::string oldText = m_text;
m_text.insert(m_cursorPos, text);
m_cursorPos += text.length();
blinkCursor();
update();
UIWidget::onTextChange(m_text, oldText);
}
}
}
void UITextEdit::appendCharacter(char c)
{
if((c == '\n' && !m_multiline) || c == '\r')
return;
if(m_cursorPos >= 0) {
if(m_maxLength > 0 && m_text.length() + 1 > m_maxLength)
return;
if(m_validCharacters.size() > 0 && m_validCharacters.find(c) == std::string::npos)
return;
std::string tmp;
tmp = c;
std::string oldText = m_text;
m_text.insert(m_cursorPos, tmp);
m_cursorPos++;
blinkCursor();
update();
UIWidget::onTextChange(m_text, oldText);
}
}
void UITextEdit::removeCharacter(bool right)
{
std::string oldText = m_text;
if(m_cursorPos >= 0 && m_text.length() > 0) {
if((uint)m_cursorPos >= m_text.length()) {
m_text.erase(m_text.begin() + (--m_cursorPos));
} else {
if(right)
m_text.erase(m_text.begin() + m_cursorPos);
else if(m_cursorPos > 0)
m_text.erase(m_text.begin() + --m_cursorPos);
}
blinkCursor();
update();
UIWidget::onTextChange(m_text, oldText);
}
}
void UITextEdit::moveCursor(bool right)
{
if(right) {
if((uint)m_cursorPos+1 <= m_text.length()) {
m_cursorPos++;
blinkCursor();
}
} else {
if(m_cursorPos-1 >= 0) {
m_cursorPos--;
blinkCursor();
}
}
update();
}
int UITextEdit::getTextPos(Point pos)
{
int textLength = m_text.length();
// find any glyph that is actually on the
int candidatePos = -1;
for(int i=0;i<textLength;++i) {
Rect clickGlyphRect = m_glyphsCoords[i];
clickGlyphRect.expandTop(m_font->getYOffset() + m_font->getGlyphSpacing().height());
clickGlyphRect.expandLeft(m_font->getGlyphSpacing().width()+1);
if(clickGlyphRect.contains(pos))
return i;
else if(pos.y >= clickGlyphRect.top() && pos.y <= clickGlyphRect.bottom()) {
if(pos.x <= clickGlyphRect.left())
candidatePos = i;
else if(pos.x >= clickGlyphRect.right())
candidatePos = i+1;
}
}
return candidatePos;
}
std::string UITextEdit::getDisplayedText()
{
if(m_textHidden)
return std::string(m_text.length(), '*');
else
return m_text;
}
void UITextEdit::onTextChange(const std::string& text, const std::string& oldText)
{
m_cursorPos = text.length();
blinkCursor();
update();
UIWidget::onTextChange(text, oldText);
}
void UITextEdit::onFontChange(const std::string& font)
{
update();
UIWidget::onFontChange(font);
}
void UITextEdit::onStyleApply(const std::string& styleName, const OTMLNodePtr& styleNode)
{
UIWidget::onStyleApply(styleName, styleNode);
for(const OTMLNodePtr& node : styleNode->children()) {
if(node->tag() == "text") {
setText(node->value());
setCursorPos(m_text.length());
} else if(node->tag() == "text-hidden")
setTextHidden(node->value<bool>());
else if(node->tag() == "text-margin")
setTextHorizontalMargin(node->value<int>());
else if(node->tag() == "shift-navigation")
setShiftNavigation(node->value<bool>());
else if(node->tag() == "multiline")
setMultiline(node->value<bool>());
else if(node->tag() == "max-length")
setMaxLength(node->value<int>());
}
}
void UITextEdit::onGeometryChange(const Rect& oldRect, const Rect& newRect)
{
update();
UIWidget::onGeometryChange(oldRect, newRect);
}
void UITextEdit::onFocusChange(bool focused, Fw::FocusReason reason)
{
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if(focused) {
if(reason == Fw::KeyboardFocusReason)
setCursorPos(m_text.length());
else
blinkCursor();
}
UIWidget::onFocusChange(focused, reason);
}
bool UITextEdit::onKeyPress(uchar keyCode, int keyboardModifiers, int autoRepeatTicks)
{
if(UIWidget::onKeyPress(keyCode, keyboardModifiers, autoRepeatTicks))
return true;
if(keyboardModifiers == Fw::KeyboardNoModifier) {
if(keyCode == Fw::KeyDelete) { // erase right character
removeCharacter(true);
return true;
} else if(keyCode == Fw::KeyBackspace) { // erase left character {
removeCharacter(false);
return true;
} else if(keyCode == Fw::KeyRight && !m_shiftNavigation) { // move cursor right
moveCursor(true);
return true;
} else if(keyCode == Fw::KeyLeft && !m_shiftNavigation) { // move cursor left
moveCursor(false);
return true;
} else if(keyCode == Fw::KeyHome) { // move cursor to first character
setCursorPos(0);
return true;
} else if(keyCode == Fw::KeyEnd) { // move cursor to last character
setCursorPos(m_text.length());
return true;
} else if(keyCode == Fw::KeyTab && !m_shiftNavigation) {
if(UIWidgetPtr parent = getParent())
parent->focusNextChild(Fw::KeyboardFocusReason);
return true;
} else if(keyCode == Fw::KeyEnter && m_multiline) {
appendCharacter('\n');
return true;
} else if(keyCode == Fw::KeyUp && !m_shiftNavigation && m_multiline) {
} else if(keyCode == Fw::KeyDown && !m_shiftNavigation && m_multiline) {
}
} else if(keyboardModifiers == Fw::KeyboardCtrlModifier) {
if(keyCode == Fw::KeyV) {
appendText(g_window.getClipboardText());
return true;
}
} else if(keyboardModifiers == Fw::KeyboardShiftModifier) {
if(keyCode == Fw::KeyRight && m_shiftNavigation) { // move cursor right
moveCursor(true);
return true;
} else if(keyCode == Fw::KeyLeft && m_shiftNavigation) { // move cursor left
moveCursor(false);
return true;
}
}
return false;
}
bool UITextEdit::onKeyText(const std::string& keyText)
{
appendText(keyText);
return true;
}
bool UITextEdit::onMousePress(const Point& mousePos, Fw::MouseButton button)
{
if(button == Fw::MouseLeftButton) {
int pos = getTextPos(mousePos);
if(pos >= 0)
setCursorPos(pos);
}
return true;
}
void UITextEdit::blinkCursor()
{
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m_cursorTicks = g_clock.millis();
g_app.repaint();
}