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https://github.com/unidoc/unipdf.git
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d961079c5d
* Add render package * Add text state * Add more text operators * Remove unnecessary files * Add text font * Add custom text render method * Improve text rendering method * Rename text state methods * Refactor and document context interface * Refact text begin/end operators * Fix graphics state transformations * Keep original font when doing font substitution * Take page cropbox into account * Revert to substitution font if original font measurement is 0 * Add font substitution package * Implement addition transform.Point methods * Use transform.Point in the image context package * Remove unneeded functionality from the render image package * Fix golint notices in the image rendering package * Fix go vet notices in the render package * Fix golint notices in the top-level render package * Improve render context package documentation * Document context text state struct. * Document context text font struct. * Minor logging improvements * Add license disclaimer to the render package files * Avoid using package aliases where possible * Change style of section comments * Adapt render package import style to follow the developer guide * Improve documentation for the internal matrix implementation * Update render package dependency versions * Apply crop box post render * Account for offseted media boxes * Improve metrics of rendered characters * Fix text matrix translation * Change priority of fonts used for measuring rendered characters * Skip invalid m and l operators on image rendering * Small fix for v operator * Fix rendered characters spacing issues * Refactor naming of internal render packages
48 lines
988 B
Go
48 lines
988 B
Go
/*
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* This file is subject to the terms and conditions defined in
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* file 'LICENSE.md', which is part of this source code package.
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*/
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package context
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import "image/color"
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// FillRule represents the fill style used by a context instance.
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type FillRule int
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// Fill rules.
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const (
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FillRuleWinding FillRule = iota
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FillRuleEvenOdd
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)
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// LineCap represents the line cap style used by a context instance.
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type LineCap int
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// Line cap styles.
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const (
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LineCapRound LineCap = iota
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LineCapButt
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LineCapSquare
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)
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// LineJoin represents the line join style used by a context instance.
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type LineJoin int
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// Line join styles.
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const (
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LineJoinRound LineJoin = iota
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LineJoinBevel
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)
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// Pattern represents a pattern which can be rendered by a context instance.
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type Pattern interface {
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ColorAt(x, y int) color.Color
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}
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// Gradient represents a gradient pattern which can be rendered by a context instance.
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type Gradient interface {
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Pattern
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AddColorStop(offset float64, color color.Color)
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}
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