AddPageWithOption

content_obj.go

@@ -83,7 +83,7 @@ func (c *ContentObj) AppendStreamText(text string) error {
 		setXCount:      setXCount,
 		x:              x,
 		y:              y,
-		pageheight:     c.getRoot().config.PageSize.H,
+		pageheight:     c.getRoot().curr.pageSize.H,
 		contentType:    ContentTypeText,
 		lineWidth:      c.getRoot().curr.lineWidth,
 	}
@@ -121,7 +121,7 @@ func (c *ContentObj) AppendStreamSubsetFont(rectangle *Rect, text string, cellOp
 		setXCount:      setXCount,
 		x:              x,
 		y:              y,
-		pageheight:     c.getRoot().config.PageSize.H,
+		pageheight:     c.getRoot().curr.pageSize.H,
 		contentType:    ContentTypeCell,
 		cellOpt:        cellOpt,
 		lineWidth:      c.getRoot().curr.lineWidth,
@@ -139,7 +139,7 @@ func (c *ContentObj) AppendStreamLine(x1 float64, y1 float64, x2 float64, y2 flo
 	//h := c.getRoot().config.PageSize.H
 	//c.stream.WriteString(fmt.Sprintf("%0.2f %0.2f m %0.2f %0.2f l s\n", x1, h-y1, x2, h-y2))
 	var cache cacheContentLine
-	cache.pageHeight = c.getRoot().config.PageSize.H
+	cache.pageHeight = c.getRoot().curr.pageSize.H
 	cache.x1 = x1
 	cache.y1 = y1
 	cache.x2 = x2
@@ -150,7 +150,7 @@ func (c *ContentObj) AppendStreamLine(x1 float64, y1 float64, x2 float64, y2 flo
 //AppendStreamRectangle : draw rectangle from lower-left corner (x, y) with specif width/height
 func (c *ContentObj) AppendStreamRectangle(x float64, y float64, wdth float64, hght float64, style string) {
 	var cache cacheContentRectangle
-	cache.pageHeight = c.getRoot().config.PageSize.H
+	cache.pageHeight = c.getRoot().curr.pageSize.H
 	cache.x = x
 	cache.y = y
 	cache.width = wdth
@@ -162,7 +162,7 @@ func (c *ContentObj) AppendStreamRectangle(x float64, y float64, wdth float64, h
 //AppendStreamOval append oval
 func (c *ContentObj) AppendStreamOval(x1 float64, y1 float64, x2 float64, y2 float64) {
 	var cache cacheContentOval
-	cache.pageHeight = c.getRoot().config.PageSize.H
+	cache.pageHeight = c.getRoot().curr.pageSize.H
 	cache.x1 = x1
 	cache.y1 = y1
 	cache.x2 = x2
@@ -181,7 +181,7 @@ func (c *ContentObj) AppendStreamOval(x1 float64, y1 float64, x2 float64, y2 flo
 //		DF or FD: draw and fill
 func (c *ContentObj) AppendStreamCurve(x0 float64, y0 float64, x1 float64, y1 float64, x2 float64, y2 float64, x3 float64, y3 float64, style string) {
 	var cache cacheContentCurve
-	cache.pageHeight = c.getRoot().config.PageSize.H
+	cache.pageHeight = c.getRoot().curr.pageSize.H
 	cache.x0 = x0
 	cache.y0 = y0
 	cache.x1 = x1
@@ -250,7 +250,7 @@ func (c *ContentObj) AppendStreamSetColorFill(r uint8, g uint8, b uint8) {
 //AppendStreamImage append image
 func (c *ContentObj) AppendStreamImage(index int, x float64, y float64, rect *Rect) {
 	//fmt.Printf("index = %d",index)
-	h := c.getRoot().config.PageSize.H
+	h := c.getRoot().curr.pageSize.H
 	c.stream.WriteString(fmt.Sprintf("q %0.2f 0 0 %0.2f %0.2f %0.2f cm /I%d Do Q\n", rect.W, rect.H, x, h-(y+rect.H), index+1))
 }
 

current.go

@@ -35,6 +35,9 @@ type Current struct {
 	grayStroke float64
 
 	lineWidth float64
+
+	//current page size
+	pageSize Rect
 }
 
 func (c *Current) setTextColor(rgb Rgb) {

gopdf.go

@@ -228,10 +228,24 @@ func (gp *GoPdf) Image(picPath string, x float64, y float64, rect *Rect) error {
 
 //AddPage : add new page
 func (gp *GoPdf) AddPage() {
+	emptyOpt := PageOption{}
+	gp.AddPageWithOption(emptyOpt)
+}
+
+//AddPageWithOption  : add new page with option
+func (gp *GoPdf) AddPageWithOption(opt PageOption) {
 	page := new(PageObj)
 	page.init(func() *GoPdf {
 		return gp
 	})
+
+	if !opt.isEmpty() { //use page option
+		page.setOption(opt)
+		gp.curr.pageSize = opt.PageSize
+	} else { //use default
+		gp.curr.pageSize = gp.config.PageSize
+	}
+
 	page.ResourcesRelate = strconv.Itoa(gp.indexOfProcSet+1) + " 0 R"
 	index := gp.addObj(page)
 	if gp.indexOfFirstPageObj == -1 {

page_obj.go

@@ -2,6 +2,7 @@ package gopdf
 
 import (
 	"bytes"
+	"fmt"
 	//"fmt"
 )
 
@@ -10,12 +11,17 @@ type PageObj struct { //impl IObj
 	buffer          bytes.Buffer
 	Contents        string
 	ResourcesRelate string
+	pageOption      PageOption
 }
 
 func (p *PageObj) init(funcGetRoot func() *GoPdf) {
 
 }
 
+func (p *PageObj) setOption(opt PageOption) {
+	p.pageOption = opt
+}
+
 func (p *PageObj) build(objID int) error {
 
 	p.buffer.WriteString("<<\n")
@@ -33,6 +39,11 @@ func (p *PageObj) build(objID int) error {
 	me.buffer.WriteString("    >>\n")*/
 	//me.buffer.WriteString("  >>\n")
 	p.buffer.WriteString("  /Contents " + p.Contents + "\n") //sample  Contents 8 0 R
+	if !p.pageOption.isEmpty() {
+		height := fmt.Sprintf("%0.2f", p.pageOption.PageSize.H)
+		width := fmt.Sprintf("%0.2f", p.pageOption.PageSize.W)
+		p.buffer.WriteString(" /MediaBox [ 0 0 " + width + " " + height + " ]\n")
+	}
 	p.buffer.WriteString(">>\n")
 	return nil
 }

page_option.go

@@ -0,0 +1,13 @@
+package gopdf
+
+//PageOption option of page
+type PageOption struct {
+	PageSize Rect
+}
+
+func (p PageOption) isEmpty() bool {
+	if p.PageSize.H == 0 && p.PageSize.W == 0 {
+		return true
+	}
+	return false
+}