cgcontext

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NPAPI drawPlugin retrieve cgContext from NPP instance

Im trying to draw a png in my (NPAPI)webplugin for Mac based on basic-plugin. I would like to redraw the plugin on a NPCocoaEventMouseDown but I\'m having trouwens to retrieve the cgContextRef.[详细]

2023-04-12 10:37 分类：问答
Wrap Text in CGContextShowTextAtPoint

I\'m trying to display texts in a CGContext and I want to know how to wrap the texts. How can I make this possible?[详细]

2023-04-11 07:23 分类：问答
drawing lines on top of UIImageView which has an image already

I have a picture black and white of png format that is displayed with an UIImageView. It is a clock shape with no handles. so the background is white - and the circle is black.[详细]

2023-04-08 16:39 分类：问答
iPhone - is CGContextSetStrokeColorWithColor not creating wanted color?

I am having some weird troubles with drawing some lines in an application. My drawRect is using CGContextRef context = UIGraphicsGetCurrentConte开发者_如何学Cxt();[详细]

2023-04-08 15:47 分类：问答
EXC_BAD_ACCESS on calling drawRect on a retained UIImage

I have a bit of a weird problem.I create a UIImage with imageNamed extract colour data from it and then set it to another class.[详细]

2023-04-08 15:08 分类：问答
CALayer vs CGContext, which is a better design approach?

I have been doing some experimenting with iOS drawing. To do a practical exercise I wrote a BarChart component. The following is the class diagram (well, I wasnt allowed to upload images) so let me wr[详细]

2023-04-02 16:44 分类：问答
Line graphs on iOS [closed]

As it currentl开发者_如何学JAVAy stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references,or expertise, but this question will likely[详细]

2023-03-31 18:49 分类：问答
Pop translations used during CGContext

As you can see in the code below I do some transformations on my UIView before writing some text. It seems though that the position of the text is affected by the aforementioned transformations.[详细]

2023-03-28 17:51 分类：问答
CGContext set text to justify right when generating a pdf

I\'m using开发者_StackOverflow a series of CGContext commands to create text to be used for generating a pdf file:[详细]

2023-03-28 15:11 分类：问答
iPhone: Create CGLayer with gradient point and transparent background

I would like to create a CGLayer, contains a point with gradient in boundary. Because I will use this layer to draw multiple points o开发者_运维百科n the main screen.[详细]

2023-03-26 03:15 分类：问答