Convert text into pictures, this is designed for posting long text message to weibo initially.
- paint text on picture.
- support jpg and png as well
Create new picture with Configure
pic := text2pic.NewTextPicture(text2pic.Configure{Width: 720, BgColor:text2pic.ColorWhite})
Add text line to picture with font, color and padding
pic.AddTextLine(" The Turkish lira plunged as much as 11% against the dollar", 13, f, text2pic.ColorBlue, text2pic.Padding{Left: 20, Right: 20, Bottom: 30})
Add picture io.reader is required and padding as well
pic.AddPictureLine(file, text2pic.Padding{Bottom: 20})
Draw it on io.writer. TypePng and TypeJpeg are supported
pic.Draw(writer, text2pic.TypeJpeg)
Source Code see in the example directory
package main
import (
"fmt"
"github.com/golang/freetype"
"github.com/hqbobo/text2pic"
"io/ioutil"
"log"
"os"
"bufio"
)
func main() {
// Read the font data.
fontBytes, err := ioutil.ReadFile("FZHTJW.TTF")
if err != nil {
log.Println(err)
return
}
//produce the fonttype
f, err := freetype.ParseFont(fontBytes)
if err != nil {
log.Println(err)
return
}
//define New picture with given width in px
//the height will be calucated before draw on picture
//picture will be resize to 80% of the width you given
pic := text2pic.NewTextPicture(text2pic.Configure{
Width: 720,
})
//add chinese line
pic.AddTextLine("1.这个是标题", 20, f, text2pic.ColorRed, text2pic.Padding{Left: 20, Top: 10, Bottom: 20})
pic.AddTextLine(" 北京铁路局今天凌晨2时16分发布消息称：8月12日23时04分，aaaa京沪高铁廊坊至北京aaaaa南间发生设备故障，导致部分列车晚点。铁路部门及时启动应急预案处置时16分发布消息称时16分发布消息称北京铁路局今天凌晨2时16分发布消息称：8月12日23时04分，aaaa京沪高铁廊坊至北京aaaaa南间发生设备故障，导致部分列车晚点。铁路部门及时启动应急预案处置时16分发布消息称时16分发布消息称北京铁路局今天凌晨2时16分发布消息称：8月12日23时04分，aaaa京沪高铁廊坊至北京aaaaa南间发生设备故障，导致部分列车晚点。铁路部门及时启动应急预案处置时16分发布消息称时16分发布消息称", 12, f, text2pic.ColorGreen, text2pic.Padding{Left: 20, Right: 20, Bottom: 30})
//add picture
file, err := os.Open("timg.jpg")
if err != nil {
fmt.Println(err)
}
defer file.Close()
pic.AddPictureLine(file, text2pic.Padding{Bottom: 20})
//add full english text
pic.AddTextLine("3.For English", 20, f, text2pic.ColorRed, text2pic.Padding{Bottom: 20})
pic.AddTextLine(" The Turkish lira plunged as much as 11% against the dollar, hitting a record low, before recovering some of its losses in volatile trading. The lira had already plummeted more than 20% last week as a political clash with the United States intensified and investors fretted about the Turkish government's lack of action to tackle the problems plaguing its economy. ", 13, f, text2pic.ColorBlue, text2pic.Padding{Left: 20, Right: 20, Bottom: 30})
// Save the output to file
outFile, err := os.Create("out.jpg")
if err != nil {
return
}
defer outFile.Close()
b := bufio.NewWriter(outFile)
//produce the output
pic.Draw(b, text2pic.TypeJpeg)
e := b.Flush()
if e!=nil {
fmt.Println(e)
}
}