/
page.go
185 lines (137 loc) · 3.87 KB
/
page.go
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package hpdf
/*
#cgo LDFLAGS: -lhpdf -lpng -lz
#include "hpdf.h"
*/
import "C"
import (
"unsafe"
)
func (pdf *PDF) GetCurrentPage() *Page {
page := C.HPDF_GetCurrentPage(pdf.doc)
if page == nil {
return nil
}
return &Page{page, pdf}
}
func (pdf *PDF) AddPage() (*Page, error) {
page := C.HPDF_AddPage(pdf.doc)
if page == nil {
return nil, pdf.GetLastError()
}
return newPage(page, pdf), nil
}
func (pdf *PDF) InsertPage(src *Page) (*Page, error) {
page := C.HPDF_InsertPage(pdf.doc, src.page)
if page == nil {
return nil, pdf.GetLastError()
}
return newPage(page, pdf), nil
}
func (pdf *PDF) GetPageByIndex(index uint32) (*Page, error) {
page := C.HPDF_GetPageByIndex(pdf.doc, C.HPDF_UINT(index))
if page == nil {
return nil, pdf.GetLastError()
}
return newPage(page, pdf), nil
}
type Page struct {
page C.HPDF_Page
pdf *PDF
}
func newPage(src C.HPDF_Page, pdf *PDF) *Page {
page := &Page{src, pdf}
return page
}
func (page *Page) SetWidth(width float32) error {
C.HPDF_Page_SetWidth(page.page, C.HPDF_REAL(width))
return page.pdf.GetLastError()
}
func (page *Page) SetHeight(height float32) error {
C.HPDF_Page_SetHeight(page.page, C.HPDF_REAL(height))
return page.pdf.GetLastError()
}
func (page *Page) SetSize(size PageSize, direction PageDirection) error {
C.HPDF_Page_SetSize(
page.page, C.HPDF_PageSizes(size), C.HPDF_PageDirection(direction),
)
return page.pdf.GetLastError()
}
func (page *Page) SetRotate(rotate uint16) error {
C.HPDF_Page_SetRotate(page.page, C.HPDF_UINT16(rotate))
return page.pdf.GetLastError()
}
func (page *Page) GetWidth() float32 {
return float32(C.HPDF_Page_GetWidth(page.page))
}
func (page *Page) GetHeight() float32 {
return float32(C.HPDF_Page_GetHeight(page.page))
}
func (page *Page) TextWidth(text string) float32 {
ctext := C.CString(text)
defer C.free(unsafe.Pointer(ctext))
return float32(C.HPDF_Page_TextWidth(page.page, ctext))
}
func (page *Page) MeasureText(text string, width float32, wordwrap bool) (float32, error) {
ctext := C.CString(text)
defer C.free(unsafe.Pointer(ctext))
var cwordwrap C.HPDF_BOOL = C.HPDF_FALSE
if wordwrap {
cwordwrap = C.HPDF_TRUE
}
var realWidth float32
C.HPDF_Page_MeasureText(page.page, ctext, C.HPDF_REAL(width), cwordwrap, (*C.HPDF_REAL)(&realWidth))
return realWidth, page.pdf.GetLastError()
}
func (page *Page) GetGMode() GMode {
cgMode := C.HPDF_Page_GetGMode(page.page)
return GMode(cgMode)
}
func (page *Page) GetCurrentPos() *Point {
cpoint := C.HPDF_Page_GetCurrentPos(page.page)
return pointFromHPDFPoint(cpoint)
}
func (page *Page) GetCurrentTextPos() *Point {
cpoint := C.HPDF_Page_GetCurrentTextPos(page.page)
return pointFromHPDFPoint(cpoint)
}
func (page *Page) GetCurrentFont() *Font {
cFont := C.HPDF_Page_GetCurrentFont(page.page)
if cFont != nil {
return newFont(cFont)
} else {
return nil
}
}
func (page *Page) GetCurrentFontSize() float32 {
cSize := C.HPDF_Page_GetCurrentFontSize(page.page)
return float32(cSize)
}
func (page *Page) GetTransMatrix() *TransMatrix {
cTransMatrix := C.HPDF_Page_GetTransMatrix(page.page)
return transMatrixFromHPDFTransMatrix(cTransMatrix)
}
func (page *Page) GetLineWidth() float32 {
cLineWidth := C.HPDF_Page_GetLineWidth(page.page)
return float32(cLineWidth)
}
func (page *Page) GetLineCap() LineCap {
cLineCap := C.HPDF_Page_GetLineCap(page.page)
return LineCap(cLineCap)
}
func (page *Page) SetLineCap(lineCap LineCap) error {
C.HPDF_Page_SetLineCap(page.page, C.HPDF_LineCap(lineCap))
return page.pdf.GetLastError()
}
func (page *Page) GetLineJoin() LineJoin {
cLineJoin := C.HPDF_Page_GetLineJoin(page.page)
return LineJoin(cLineJoin)
}
func (page *Page) GetMiterLimit() float32 {
cMiterLimit := C.HPDF_Page_GetMiterLimit(page.page)
return float32(cMiterLimit)
}
func (page *Page) GetDash() *DashMode {
cDashMode := C.HPDF_Page_GetDash(page.page)
return dashModeFromHPDFDashMode(cDashMode)
}