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POj2me: using custom fonts(bitmap) performance
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  1. POj2me: using custom fonts(bitmap) performance
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    copied!<p><br /></p> <p>I want to use custom fonts in my j2me application. so I created a png file contains all needed glyph and an array of glyphs width and another for glyphs offset in PNG file.</p> <p>Now, I want to render a text in my app using above font within a gameCanvas class. but when I use the following code, rendering text in real device is very slow. </p> <p>Note: the text is coded(for some purposes) to bytes and stored in this.text variable. 242=[space],241=[\n] and 243=[\r].</p> <pre><code>int textIndex = 0; while(textIndex &lt; this.text.length) { int index = this.text[textIndex] &amp; 0xFF; if(index &gt; 243) { continue; } else if(index == 242) lineLeft += 3; else if(index == 241 || index == 243) { top += font.getHeight(); lineLeft = 0; continue; } else { lineLeft += widths[index]; if(lineLeft &lt;= getWidth()) lineLeft = 0; int left = starts[index]; int charWidth = widths[index]; try{ bg.drawRegion(font, left, 0, charWidth, font.getHeight(), 0, lineLeft, top, Graphics.LEFT|Graphics.TOP); }catch(Exception ee) { } } textIndex++; } </code></pre> <p>Can anyone help me to improve performance and speed in my code?</p> <p>At end sorry for my bad English and thanks in advanced.:)</p> <p>Edit: I changed line</p> <pre><code> bg.drawRegion(font, left, 0, charWidth, font.getHeight(), 0, lineLeft, top, Graphics.LEFT|Graphics.TOP); </code></pre> <p>To:</p> <pre><code>bg.clipRect(left, top, charWidth, font.getHeight()); bg.drawImage(font, lineLeft - left, top,0) bg.setClip(0, 0, getWidth(), getHeight()); </code></pre> <p>but there was no difference in speed!!</p> <p>any help please!!</p> <hr> <p>Can anyone plz help me to improve my app?</p> <p>text will appear after 2-3 seconds in real device by this code, I want reduce this time to milliseconds. this is very important for me.</p> <p>Can I use threads? If yes, How?</p>
 

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