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Diffstat (limited to 'Source/GUI/IMUI/im_text.cpp')
| -rw-r--r-- | Source/GUI/IMUI/im_text.cpp | 361 |
1 files changed, 361 insertions, 0 deletions
diff --git a/Source/GUI/IMUI/im_text.cpp b/Source/GUI/IMUI/im_text.cpp new file mode 100644 index 00000000..3ecef3c6 --- /dev/null +++ b/Source/GUI/IMUI/im_text.cpp @@ -0,0 +1,361 @@ +//----------------------------------------------------------------------------- +// Name: im_text.cpp +// Developer: Wolfire Games LLC +// Description: Text element class for creating adhoc GUIs as part of the +// UI tools +// License: Read below +//----------------------------------------------------------------------------- +// +// +// Copyright 2022 Wolfire Games LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. +// +//----------------------------------------------------------------------------- +#include "im_text.h" + +#include <GUI/IMUI/imgui.h> + +/*******************************************************************************************/ +/** + * @brief Constructor + * + */ +IMText::IMText() : + fontObjDirty(false), + fontObjInit(false) +{ + IMrefCountTracker.addRefCountObject( getElementTypeName() ); +} + +/*******************************************************************************************/ +/** + * @brief Constructor + * + * @param _name Name for this object (incumbent on the programmer to make sure they're unique) + * + */ +IMText::IMText(std::string const& _name) : + IMElement(_name) +{ + IMrefCountTracker.addRefCountObject( getElementTypeName() ); +} + +/*******************************************************************************************/ +/** + * @brief Gets the name of the type of this element — for autonaming and debugging + * + * @returns name of the element type as a string + * + */ +std::string IMText::getElementTypeName() { + return "Text"; +} + +/*******************************************************************************************/ +/** + * @brief Constructor + * + * @param _text String for the text + * @param _fontName name of the font (assumed to be in Data/Fonts) + * @param _fontSize height of the font + * @param _color vec4 color rgba + * + */ +IMText::IMText(std::string const& _text, std::string const& _fontName, int _fontSize, vec4 _color ) { + + IMrefCountTracker.addRefCountObject( getElementTypeName() ); + + setText( _text ); + setFontByName( _fontName, _fontSize ); + setColor( _color ); +} + +/*******************************************************************************************/ +/** + * @brief Constructor + * + * @param _text String for the text + * @param _fontSetup Font parameter structure + * + */ +IMText::IMText( std::string const& _text, FontSetup _fontSetup ) +{ + IMrefCountTracker.addRefCountObject( getElementTypeName() ); + + setText( _text ); + setFont( _fontSetup ); +} + + +/*******************************************************************************************/ +/** + * @brief Copy constructor + * + */ +IMText::IMText( IMText const& other ) { + + IMrefCountTracker.addRefCountObject( getElementTypeName() ); + + fontObjDirty = other.fontObjDirty; + fontObjInit = other.fontObjInit; + fontSetup = other.fontSetup; + text = other.text; + screenFontSize = other.screenFontSize; + screenSize = other.screenSize; +} + + +/*******************************************************************************************/ +/** + * @brief Derives the various metrics for this text element + * + */ +void IMText::updateEngineTextObject() { + + // only bother if we have text, an owner and we haven't done it yet + if( text != "" && owner != NULL && fontObjDirty ) { + + // update the actual screen resize + screenFontSize = (int) (screenMetrics.GUItoScreenYScale * float(fontSetup.size)); + + // get a new text object + int flags = 0; + if(fontSetup.fontName == "edosz"){ + flags = TextAtlas::kSmallLowercase; + } + imuiText = owner->IMGUI_IMUIContext->makeText( std::string("Data/Fonts/" + fontSetup.fontName + ".ttf"), + screenFontSize, flags ); + fontObjInit = true; + + // update its attributes + imuiText.setText( text ); + + if( fontSetup.shadowed ) { + imuiText.setRenderFlags( TextAtlasRenderer::kTextShadow ); + } + + imuiText.setRotation( fontSetup.rotation ); + + // ask the engine for the text dimensions + vec2 boundingBox = imuiText.getBoundingBoxDimensions(); + + screenSize.x() = boundingBox.x() + 0.5f; + screenSize.y() = boundingBox.y() + 0.5f; + + vec2 newSize = vec2( (screenSize.x() / screenMetrics.GUItoScreenXScale) + 0.5f, + (screenSize.y() / screenMetrics.GUItoScreenYScale) + 0.5f ); + + setSize( newSize ); + + fontObjDirty = false; + onRelayout(); + + } + + +} + +/*******************************************************************************************/ +/** + * @brief When a resize, move, etc has happened do whatever is necessary + * + */ +void IMText::doRelayout() { + + if( fontObjDirty ) { + updateEngineTextObject(); + } + +} + +/*******************************************************************************************/ +/** + * @brief Do whatever is necessary when the resolution changes + * + */ +void IMText::doScreenResize() { + screenFontSize = int(screenMetrics.GUItoScreenYScale * float(fontSetup.size)); + fontObjDirty = true; +} + +/*******************************************************************************************/ +/** + * @brief Sets the font attributes + * + * @param _fontSetup font description object + * + */ +void IMText::setFont( FontSetup _fontSetup ) { + fontSetup = _fontSetup; + setColor( fontSetup.color ); + fontObjDirty = true; +} + + +/*******************************************************************************************/ +/** + * @brief Sets the font attributes + * + * @param _fontName name of the font (assumed to be in Data/Fonts) + * @param _fontSize height of the font + * + */ +void IMText::setFontByName( std::string const& _fontName, int _fontSize ) { + fontSetup.fontName = _fontName; + fontSetup.size = _fontSize; + fontObjDirty = true; +} + +/*******************************************************************************************/ +/** + * @brief Sets the actual text + * + * @param _text String for the text + * + */ +void IMText::setText( std::string const& _text ) { + text = _text; + fontObjDirty = true; +} + +/*******************************************************************************************/ +/** + * @brief Gets the current text + * + * @returns String for the text + * + */ +std::string IMText::getText() { + return text; +} + +/*******************************************************************************************/ +/** + * @brief Sets the text to be shadowed + * + * @param shadow true (default) if the text should have a shadow, false otherwise + * + */ +void IMText::setShadowed( bool shouldShadow ) { + fontSetup.shadowed = shouldShadow; + fontObjDirty = true; +} + +/*******************************************************************************************/ +/** + * @brief Sets the rotation for this image + * + * @param Rotation (in degrees) + * + */ +void IMText::setRotation( float _rotation ) { + fontSetup.rotation = _rotation; + fontObjDirty = true; +} + +/*******************************************************************************************/ +/** + * @brief Gets the rotation for this text + * + * @returns current rotation (in degrees) + * + */ +float IMText::getRotation() { + return fontSetup.rotation; +} + +/*******************************************************************************************/ +/** + * @brief Updates the element + * + * @param delta Number of millisecond elapsed since last update + * @param drawOffset Absolute offset from the upper lefthand corner (GUI space) + * @param guistate The state of the GUI at this update + * + */ +void IMText::update( uint64_t delta, vec2 drawOffset, GUIState& guistate ) { + IMElement::update( delta, drawOffset, guistate ); + + // update the text object, if any + updateEngineTextObject(); + +} + +/*******************************************************************************************/ +/** + * @brief Rather counter-intuitively, this draws this object on the screen + * + * @param drawOffset Absolute offset from the upper lefthand corner (GUI space) + * @param clipPos pixel location of upper lefthand corner of clipping region + * @param clipSize size of clipping region + * + */ +void IMText::render( vec2 drawOffset, vec2 currentClipPos, vec2 currentClipSize ) { + + // Make sure we're supposed draw (and have something to draw) + if( show && text != "" && fontObjInit ) { + + vec2 GUIRenderPos = drawOffset + vec2( paddingL, paddingU ) + drawDisplacement; + + vec2 screenRenderPos = screenMetrics.GUIToScreen( GUIRenderPos ); + + imuiText.setPosition( vec3( screenRenderPos.x(), screenRenderPos.y(), (float) getZOrdering() ) ); + + if( isColorEffected ) { + imuiText.setColor( effectColor ); + } + else { + imuiText.setColor( color ); + } + + if( shouldClip && currentClipSize.x() != UNDEFINEDSIZE && currentClipSize.y() != UNDEFINEDSIZE ) { + + vec2 adjustedClipPos = screenMetrics.GUIToScreen( currentClipPos + drawDisplacement ); + + vec2 screenClipPos( vec2(adjustedClipPos.x(), + adjustedClipPos.y()) ); + vec2 screenClipSize(vec2((currentClipSize.x() * screenMetrics.GUItoScreenXScale), + (currentClipSize.y() * screenMetrics.GUItoScreenYScale) ) ); + + imuiText.setClipping( screenClipPos, screenClipSize ); + + } + + if( fontSetup.shadowed ) { + imuiText.setRenderFlags( TextAtlasRenderer::kTextShadow ); + } + + if( owner != NULL ) { + owner->IMGUI_IMUIContext->queueText( imuiText ); + } + + } + + // Call the superclass to make sure any element specific rendering is done + IMElement::render( drawOffset, currentClipPos, currentClipSize ); + +} + +/*******************************************************************************************/ +/** + * @brief Remove all referenced object without releaseing references + * + */ +void IMText::clense() { + +} + +IMText::~IMText() { + IMrefCountTracker.removeRefCountObject( getElementTypeName() ); +} |