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package gofpdf
import (
"bytes"
"encoding/gob"
"reflect"
)
/*
* Copyright (c) 2015 Kurt Jung (Gmail: kurt.w.jung),
* Marcus Downing, Jan Slabon (Setasign)
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
// newTpl creates a template, copying graphics settings from a template if one is given
func newTpl(corner PointType, size SizeType, unitStr, fontDirStr string, fn func(*Tpl), copyFrom *Fpdf) Template {
orientationStr := "p"
if size.Wd > size.Ht {
orientationStr = "l"
}
sizeStr := ""
fpdf := fpdfNew(orientationStr, unitStr, sizeStr, fontDirStr, size)
tpl := Tpl{*fpdf}
if copyFrom != nil {
tpl.loadParamsFromFpdf(copyFrom)
}
tpl.Fpdf.SetAutoPageBreak(false, 0)
tpl.Fpdf.AddPage()
fn(&tpl)
bytes := tpl.Fpdf.pages[tpl.Fpdf.page].Bytes()
templates := make([]Template, 0, len(tpl.Fpdf.templates))
for _, key := range templateKeyList(tpl.Fpdf.templates, true) {
templates = append(templates, tpl.Fpdf.templates[key])
}
images := tpl.Fpdf.images
id := GenerateTemplateID()
template := FpdfTpl{id, corner, size, bytes, images, templates}
return &template
}
// FpdfTpl is a concrete implementation of the Template interface.
type FpdfTpl struct {
id int64
corner PointType
size SizeType
bytes []byte
images map[string]*ImageInfoType
templates []Template
}
// ID returns the global template identifier
func (t *FpdfTpl) ID() int64 {
return t.id
}
// Size gives the bounding dimensions of this template
func (t *FpdfTpl) Size() (corner PointType, size SizeType) {
return t.corner, t.size
}
// Bytes returns the actual template data, not including resources
func (t *FpdfTpl) Bytes() []byte {
return t.bytes
}
// Images returns a list of the images used in this template
func (t *FpdfTpl) Images() map[string]*ImageInfoType {
return t.images
}
// Templates returns a list of templates used in this template
func (t *FpdfTpl) Templates() []Template {
return t.templates
}
func (t *FpdfTpl) GobEncode() ([]byte, error) {
w := new(bytes.Buffer)
encoder := gob.NewEncoder(w)
err := encoder.Encode(t.id)
if err == nil {
err = encoder.Encode(t.corner)
}
if err == nil {
err = encoder.Encode(t.size)
}
if err == nil {
err = encoder.Encode(t.bytes)
}
if err == nil {
err = encoder.Encode(t.images)
}
if err == nil {
err = encoder.Encode(t.templates)
}
return w.Bytes(), err
}
func (t *FpdfTpl) GobDecode(buf []byte) error {
r := bytes.NewBuffer(buf)
decoder := gob.NewDecoder(r)
err := decoder.Decode(&t.id)
if err == nil {
err = decoder.Decode(&t.corner)
}
if err == nil {
err = decoder.Decode(&t.size)
}
if err == nil {
err = decoder.Decode(&t.bytes)
}
if err == nil {
err = decoder.Decode(&t.images)
}
if err == nil {
templates := make([]*FpdfTpl, 0)
err = decoder.Decode(&templates)
t.templates = make([]Template, len(templates))
for x := 0; x < len(templates); x++ {
t.templates[x] = templates[x]
}
}
t.relinkPointers(t.images)
return err
}
func (t *FpdfTpl) relinkPointers(images map[string]*ImageInfoType) {
for gKey, _ := range images {
for key, _ := range t.images {
if reflect.DeepEqual(t.images[key], images[gKey]) {
t.images[key] = images[gKey]
}
}
}
for x := 0; x < len(t.templates); x++ {
innerT := t.templates[x].(*FpdfTpl)
innerT.relinkPointers(t.images)
}
}
// Tpl is an Fpdf used for writing a template. It has most of the facilities of
// an Fpdf, but cannot add more pages. Tpl is used directly only during the
// limited time a template is writable.
type Tpl struct {
Fpdf
}
func (t *Tpl) loadParamsFromFpdf(f *Fpdf) {
t.Fpdf.compress = false
t.Fpdf.k = f.k
t.Fpdf.x = f.x
t.Fpdf.y = f.y
t.Fpdf.lineWidth = f.lineWidth
t.Fpdf.capStyle = f.capStyle
t.Fpdf.joinStyle = f.joinStyle
t.Fpdf.color.draw = f.color.draw
t.Fpdf.color.fill = f.color.fill
t.Fpdf.color.text = f.color.text
t.Fpdf.fonts = f.fonts
t.Fpdf.currentFont = f.currentFont
t.Fpdf.fontFamily = f.fontFamily
t.Fpdf.fontSize = f.fontSize
t.Fpdf.fontSizePt = f.fontSizePt
t.Fpdf.fontStyle = f.fontStyle
t.Fpdf.ws = f.ws
}
// AddPage does nothing because you cannot add pages to a template
func (t *Tpl) AddPage() {
}
// AddPageFormat does nothign because you cannot add pages to a template
func (t *Tpl) AddPageFormat(orientationStr string, size SizeType) {
}
// SetAutoPageBreak does nothing because you cannot add pages to a template
func (t *Tpl) SetAutoPageBreak(auto bool, margin float64) {
}
|
