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Bug 540

Summary:	TAntiAliasTool uses now GDI+, but draws wide horizontal lines
Product:	VCL TeeChart	Reporter:	yeray alonso <yeray>
Component:	Canvas	Assignee:	Steema Issue Manager <issuemanager>
Status:	RESOLVED FIXED
Severity:	enhancement	CC:	david, janne.snabb
Priority:	---
Version:	131119
Target Milestone:	---
Hardware:	PC
OS:	Windows
URL:	hhttp://www.teechart.net/support/viewtopic.php?p=64440#p64440
Chart Series:	Line	Delphi / C++ Builder RAD IDE Version:
Bug Depends on:	491
Bug Blocks:
Attachments:	Testing project

Description yeray alonso 2014-01-20 09:02:25 EST

Created attachment 71 [details]
Testing project

When ID 491 was closed, the TAntiAliasTool was deprecated and it moved to use GDI+ internally.

However, TAntiAliasTool drew the horizontal lines better: having a Pen.Width=1, GDI+ (and thus the new TAntiAliasTool) needs two pixels wide to draw the line.

Discussed here:
http://www.teechart.net/support/viewtopic.php?f=3&t=14565

Related to:
http://bugs.teechart.net/show_bug.cgi?id=491

Comment 1 david berneda 2014-01-22 12:31:03 EST

The best (and only) solution we have here is to use and IFDEF to switch between the new antialias (using GDI+ canvas) and the old (using our old code).

The define is:  TEEANTIALIAS

(TeeAntialias.pas unit source code is required)

We could provide this unit source code with the binary version, if necessary.

Comment 2 Janne 2014-02-10 05:34:55 EST

Hi,

so how do I get it working with latest sources 131119 (drawing right not dual color)?


(In reply to david berneda from comment #1)
> The best (and only) solution we have here is to use and IFDEF to switch
> between the new antialias (using GDI+ canvas) and the old (using our old
> code).
> 
> The define is:  TEEANTIALIAS
> 
> (TeeAntialias.pas unit source code is required)
> 
> We could provide this unit source code with the binary version, if necessary.