Description Julien Muller 2011-01-12 05:15:53 EST

Build Identifier: M20100909-0800

When rendering in html, it is important to have control over the size of the components integrated. In the html context, pixel is more used than pt.

If you create a report with a Custom master size defined in pixel, chart size defined in pixels, and present it as html in an app, I realized the chart images are weirdly resized. This makes a really bad definition and quality is hardly acceptable.

While trying to understand the problem, I realized the sizes defined in px in the .rptdesign file:
<property name="height">200px</property>
<property name="width">300px</property>
Are rendered in pt in the html output:
style=" width: 303pt; height: 202pt;"
>> Since these units are very different, the result is not what I expected. I assume birt mix up px and pt.

The expected behavior (IMO) would be to have a size definition that match the rendering: If a chart is create with custom size 200px,300px, I expect the chart to be rendered at an acceptable definition (dpi) on a screen.

Workaround: This can be adjusted using dpi, since there is a correlation between px, pt and dpi:
HTMLRenderOption options = new HTMLRenderOption();
options.setOption(HTMLRenderOption.CHART_DPI,300);

Reproducible: Always

Steps to Reproduce:
1.Create a new report
2.define a master custom size in px
3.Create a chart
4.Define a chart custom size in px, set the type as jpg (the result is more obvious)
5.Render in html(for instance in the birt viewer)
6.Checking the html source, you will notice your sizes are converted into pt and designer has no way to ajust this.