1 | /* |
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2 | orxonox - the future of 3D-vertical-scrollers |
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3 | |
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4 | Copyright (C) 2004 orx |
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5 | |
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6 | This program is free software; you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation; either version 2, or (at your option) |
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9 | any later version. |
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10 | |
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11 | ### File Specific: |
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12 | main-programmer: Benjamin Grauer |
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13 | co-programmer: ... |
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14 | */ |
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15 | |
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16 | #define DEBUG_SPECIAL_MODULE DEBUG_MODULE_GRAPHICS |
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17 | |
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18 | #include "multi_line_text.h" |
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19 | #include "font.h" |
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20 | |
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21 | using namespace std; |
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22 | |
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23 | /** |
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24 | * @brief creates a new Text Element |
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25 | * @param fontFile the Font to render this text in |
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26 | * @param type The renderType to display this font in |
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27 | */ |
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28 | MultiLineText::MultiLineText(const std::string& fontFile, unsigned int textSize) |
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29 | : Text(fontFile, textSize) |
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30 | { |
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31 | this->setClassID(CL_MULTI_LINE_TEXT, "MultiLineText"); |
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32 | |
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33 | this->lineSpacing = 1.0f; |
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34 | this->lineWidth = 100.0f; |
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35 | this->setupTextWidth(); |
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36 | } |
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37 | |
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38 | /** |
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39 | * @brief sets the maximum Line width |
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40 | * @param lineWidth the maximum lineWidth. |
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41 | */ |
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42 | void MultiLineText::setLineWidth(float lineWidth) |
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43 | { |
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44 | this->lineWidth = lineWidth; |
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45 | this->setupTextWidth(); |
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46 | } |
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47 | |
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48 | |
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49 | /** |
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50 | * @brief draws the Text |
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51 | */ |
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52 | void MultiLineText::draw() const |
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53 | { |
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54 | if (unlikely(this->getText().empty())) |
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55 | return; |
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56 | glPushMatrix(); |
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57 | // transform for alignment. |
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58 | // TODO make the Stuff with the alignment |
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59 | if (this->getAlignment() == TEXT_ALIGN_RIGHT) |
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60 | glTranslatef(-this->getSizeX2D(), 0, 0); |
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61 | else if (this->getAlignment() == TEXT_ALIGN_CENTER || this->getAlignment() == TEXT_ALIGN_SCREEN_CENTER) |
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62 | glTranslatef(-this->getSizeX2D()/2, 0, 0); |
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63 | |
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64 | // drawing this Text. |
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65 | // setting the Blending effects |
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66 | glColor4f(this->getColor().x, this->getColor().y, this->getColor().z, this->getBlending()); |
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67 | glEnable(GL_BLEND); |
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68 | glEnable(GL_TEXTURE_2D); |
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69 | glBlendFunc(GL_SRC_ALPHA, GL_ONE); |
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70 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, GL_MODULATE ); |
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71 | |
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72 | glBindTexture(GL_TEXTURE_2D, this->getFont()->getTexture()); |
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73 | glTranslatef(this->getAbsCoor2D().x, this->getAbsCoor2D().y, 0); |
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74 | glRotatef(this->getAbsDir2D(), 0, 0, 1); |
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75 | |
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76 | Glyph* tmpGlyph; |
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77 | float posX = 0.0f; |
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78 | float posY = 0.0f; |
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79 | unsigned int lineNumber = 0; |
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80 | |
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81 | glBegin(GL_QUADS); |
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82 | for (unsigned int i = 0; i < this->getText().size(); i++) |
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83 | { |
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84 | if (unlikely(tmpGlyph->character == '\n' || i == this->lineEnds[lineNumber])) |
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85 | { |
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86 | // go to the next Line. |
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87 | lineNumber++; |
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88 | posX = 0.0f; |
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89 | posY += this->lineSpacing + this->getFont()->getMaxHeight(); |
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90 | } |
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91 | |
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92 | if(likely((tmpGlyph = this->getFont()->getGlyphArray()[this->getText()[i]]) != NULL)) |
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93 | { |
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94 | glTexCoord2f(tmpGlyph->texCoord[1], tmpGlyph->texCoord[2]); |
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95 | glVertex2d(posX+tmpGlyph->maxX*this->getSize(), posY); |
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96 | |
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97 | glTexCoord2f(tmpGlyph->texCoord[1], tmpGlyph->texCoord[3]); |
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98 | glVertex2d(posX+tmpGlyph->maxX*this->getSize(), posY + this->getSize()); |
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99 | |
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100 | glTexCoord2f(tmpGlyph->texCoord[0], tmpGlyph->texCoord[3]); |
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101 | glVertex2d(posX+tmpGlyph->minX*this->getSize(), posY+ this->getSize()); |
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102 | |
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103 | glTexCoord2f(tmpGlyph->texCoord[0], tmpGlyph->texCoord[2]); |
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104 | glVertex2d(posX+tmpGlyph->minX*this->getSize(), posY); |
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105 | |
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106 | posX += tmpGlyph->advance * this->getSize(); |
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107 | } |
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108 | } |
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109 | glEnd(); |
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110 | glPopMatrix(); |
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111 | } |
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112 | |
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113 | /** |
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114 | * @brief setting up the Text-Width if DYNAMIC |
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115 | */ |
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116 | void MultiLineText::setupTextWidth() |
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117 | { |
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118 | this->lineEnds.clear(); |
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119 | float width = 0.0f; |
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120 | // TODO make size local to this (not using the one from Element2D. |
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121 | float maxWidth = this->lineWidth / this->getSize(); |
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122 | |
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123 | for (unsigned int i = 0; i < this->getText().size(); i++) |
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124 | { |
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125 | if (width > maxWidth || this->getText()[i] == '\n') |
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126 | { |
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127 | this->lineEnds.push_back(i); |
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128 | width = 0.0f; |
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129 | } |
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130 | // Advance the Text. |
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131 | if(this->getFont()->getGlyphArray()[this->getText()[i]] != NULL) |
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132 | width += this->getFont()->getGlyphArray()[this->getText()[i]]->advance; |
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133 | } |
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134 | } |
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