From b09a1c5eef4ec4c053c0ec22da4e9f147aae73e4 Mon Sep 17 00:00:00 2001 From: Kurt Jung Date: Tue, 7 Jul 2015 11:10:07 -0400 Subject: Convert sequential examples to ones that are bound to gofpdf methods. --- fpdftrans.go | 34 ++++++++++++++++++++++++++++++++-- 1 file changed, 32 insertions(+), 2 deletions(-) (limited to 'fpdftrans.go') diff --git a/fpdftrans.go b/fpdftrans.go index b87d9b9..9cda397 100644 --- a/fpdftrans.go +++ b/fpdftrans.go @@ -20,8 +20,6 @@ type TransformMatrix struct { // TransformScale(), TransformSkew(), etc. This is followed by text, drawing or // image output and finally a call to TransformEnd(). All transformation // contexts must be properly ended prior to outputting the document. -// -// See tutorial 17 for transformation examples. func (f *Fpdf) TransformBegin() { f.transformNest++ f.out("q") @@ -29,6 +27,8 @@ func (f *Fpdf) TransformBegin() { // TransformScaleX scales the width of the following text, drawings and images. // scaleWd is the percentage scaling factor. (x, y) is center of scaling. +// +// The TransformBegin() example demonstrates this method. func (f *Fpdf) TransformScaleX(scaleWd, x, y float64) { f.TransformScale(scaleWd, 100, x, y) } @@ -36,6 +36,8 @@ func (f *Fpdf) TransformScaleX(scaleWd, x, y float64) { // TransformScaleY scales the height of the following text, drawings and // images. scaleHt is the percentage scaling factor. (x, y) is center of // scaling. +// +// The TransformBegin() example demonstrates this method. func (f *Fpdf) TransformScaleY(scaleHt, x, y float64) { f.TransformScale(100, scaleHt, x, y) } @@ -43,6 +45,8 @@ func (f *Fpdf) TransformScaleY(scaleHt, x, y float64) { // TransformScaleXY uniformly scales the width and height of the following // text, drawings and images. s is the percentage scaling factor for both width // and height. (x, y) is center of scaling. +// +// The TransformBegin() example demonstrates this method. func (f *Fpdf) TransformScaleXY(s, x, y float64) { f.TransformScale(s, s, x, y) } @@ -50,6 +54,8 @@ func (f *Fpdf) TransformScaleXY(s, x, y float64) { // TransformScale generally scales the following text, drawings and images. // scaleWd and scaleHt are the percentage scaling factors for width and height. // (x, y) is center of scaling. +// +// The TransformBegin() example demonstrates this method. func (f *Fpdf) TransformScale(scaleWd, scaleHt, x, y float64) { if scaleWd == 0 || scaleHt == 0 { f.err = fmt.Errorf("scale factor cannot be zero") @@ -65,18 +71,24 @@ func (f *Fpdf) TransformScale(scaleWd, scaleHt, x, y float64) { // TransformMirrorHorizontal horizontally mirrors the following text, drawings // and images. x is the axis of reflection. +// +// The TransformBegin() example demonstrates this method. func (f *Fpdf) TransformMirrorHorizontal(x float64) { f.TransformScale(-100, 100, x, f.y) } // TransformMirrorVertical vertically mirrors the following text, drawings and // images. y is the axis of reflection. +// +// The TransformBegin() example demonstrates this method. func (f *Fpdf) TransformMirrorVertical(y float64) { f.TransformScale(100, -100, f.x, y) } // TransformMirrorPoint symmetrically mirrors the following text, drawings and // images on the point specified by (x, y). +// +// The TransformBegin() example demonstrates this method. func (f *Fpdf) TransformMirrorPoint(x, y float64) { f.TransformScale(-100, -100, x, y) } @@ -85,6 +97,8 @@ func (f *Fpdf) TransformMirrorPoint(x, y float64) { // images on the line defined by angle and the point (x, y). angles is // specified in degrees and measured counter-clockwise from the 3 o'clock // position. +// +// The TransformBegin() example demonstrates this method. func (f *Fpdf) TransformMirrorLine(angle, x, y float64) { f.TransformScale(-100, 100, x, y) f.TransformRotate(-2*(angle-90), x, y) @@ -92,18 +106,24 @@ func (f *Fpdf) TransformMirrorLine(angle, x, y float64) { // TransformTranslateX moves the following text, drawings and images // horizontally by the amount specified by tx. +// +// The TransformBegin() example demonstrates this method. func (f *Fpdf) TransformTranslateX(tx float64) { f.TransformTranslate(tx, 0) } // TransformTranslateY moves the following text, drawings and images vertically // by the amount specified by ty. +// +// The TransformBegin() example demonstrates this method. func (f *Fpdf) TransformTranslateY(ty float64) { f.TransformTranslate(0, ty) } // TransformTranslate moves the following text, drawings and images // horizontally and vertically by the amounts specified by tx and ty. +// +// The TransformBegin() example demonstrates this method. func (f *Fpdf) TransformTranslate(tx, ty float64) { f.Transform(TransformMatrix{1, 0, 0, 1, tx * f.k, -ty * f.k}) } @@ -111,6 +131,8 @@ func (f *Fpdf) TransformTranslate(tx, ty float64) { // TransformRotate rotates the following text, drawings and images around the // center point (x, y). angle is specified in degrees and measured // counter-clockwise from the 3 o'clock position. +// +// The TransformBegin() example demonstrates this method. func (f *Fpdf) TransformRotate(angle, x, y float64) { y = (f.h - y) * f.k x *= f.k @@ -128,6 +150,8 @@ func (f *Fpdf) TransformRotate(angle, x, y float64) { // TransformSkewX horizontally skews the following text, drawings and images // keeping the point (x, y) stationary. angleX ranges from -90 degrees (skew to // the left) to 90 degrees (skew to the right). +// +// The TransformBegin() example demonstrates this method. func (f *Fpdf) TransformSkewX(angleX, x, y float64) { f.TransformSkew(angleX, 0, x, y) } @@ -135,6 +159,8 @@ func (f *Fpdf) TransformSkewX(angleX, x, y float64) { // TransformSkewY vertically skews the following text, drawings and images // keeping the point (x, y) stationary. angleY ranges from -90 degrees (skew to // the bottom) to 90 degrees (skew to the top). +// +// The TransformBegin() example demonstrates this method. func (f *Fpdf) TransformSkewY(angleY, x, y float64) { f.TransformSkew(0, angleY, x, y) } @@ -143,6 +169,8 @@ func (f *Fpdf) TransformSkewY(angleY, x, y float64) { // keeping the point (x, y) stationary. angleX ranges from -90 degrees (skew to // the left) to 90 degrees (skew to the right). angleY ranges from -90 degrees // (skew to the bottom) to 90 degrees (skew to the top). +// +// The TransformBegin() example demonstrates this method. func (f *Fpdf) TransformSkew(angleX, angleY, x, y float64) { if angleX <= -90 || angleX >= 90 || angleY <= -90 || angleY >= 90 { f.err = fmt.Errorf("skew values must be between -90° and 90°") @@ -173,6 +201,8 @@ func (f *Fpdf) Transform(tm TransformMatrix) { } // TransformEnd applies a transformation that was begun with a call to TransformBegin(). +// +// The TransformBegin() example demonstrates this method. func (f *Fpdf) TransformEnd() { if f.transformNest > 0 { f.transformNest-- -- cgit v1.2.1-24-ge1ad