Re: conflict between Core Graphics and NSView graphics
Re: conflict between Core Graphics and NSView graphics
- Subject: Re: conflict between Core Graphics and NSView graphics
- From: Bill Appleton <email@hidden>
- Date: Mon, 26 Apr 2010 12:54:28 -0700
thanks all!
On Mon, Apr 26, 2010 at 12:50 PM, Aki Inoue <email@hidden> wrote:
> OK, sounds like you're being affected by the text matrix.
>
> In CG, there are 3 font properties that determine the font rendering: font
> name, font size, and text matrix.
> You need to manage all 3.
>
> The easiest approach is to use -[NSFont setInContext:] to let the Cocoa
> object set all 3 properties for you.
> Another approach is to reset the text matrix directly using
> CGContextSetTextMatrix.
>
> Note that the translation part (tx and ty components) are directly tied to
> the text position (CGContextSetTextPosition).
>
> You need to reset the text matrix before calling CGContextSetTextPosition,
> or you could just update the text position using CGContextSetTextMatrix.
>
> Aki
>
> On Apr 26, 2010, at 12:39 PM, Bill Appleton wrote:
>
> hi Aki,
>
> i am using CGContextShowGlyphsWithAdvances
>
> i have a very large amount of core graphics code, i thought it was
> compatible with cocoa
>
> i see the text in the right spot but the size is gigantic
>
>
>
> thanks,
>
> bill
>
>
>
>
>
> On Mon, Apr 26, 2010 at 12:34 PM, Aki Inoue <email@hidden> wrote:
>
>> Bill,
>>
>> How are you rendering the text ?
>>
>> We recommend sticking to Cocoa text rendering API in order to support
>> proper Unicode rendering.
>>
>> Thanks,
>>
>> Aki
>>
>> On Apr 26, 2010, at 12:24 PM, Bill Appleton wrote:
>>
>> > hi all
>> >
>> > i converted a bunch of quickdraw code to core graphics successfully --
>> it
>> > worked
>> >
>> > now i am converting a bunch of carbon UI code to cocoa
>> >
>> > but when I draw text, my fonts are wrong and my font sizes are much too
>> big
>> >
>> > i am getting the CGContextRef from the NSWindow in the drawRect handler,
>> and
>> > then setting the CG font and size, etc. like before
>> >
>> > but it is as if I need to also set the NSFont or something like that
>> >
>> > other graphics (lines, bitmaps, etc.) are drawing correctly
>> >
>> > can someone shed some light on this and/or point me to some
>> documentation?
>> >
>> >
>> > thanks,
>> >
>> > bill appleton
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