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Qt加载XPM图像

XPM是一种基于ASCII编码的图像格式,一般用于创建图标。由于它是ASCII编码,很方便地在代码中使用。 

Qt的QPixmap类支持XPM格式,原型如下:

QPixmap::QPixmap(const char *const [] xpm)

摘取Qt源码中的"严重警告"XPM图标:

static const char* const critical_xpm[]={
"32 32 4 1",
". c None",
"a c #999999",
"* c #ff0000",
"b c #ffffff",
"...........********.............",
".........************...........",
".......****************.........",
"......******************........",
".....********************a......",
"....**********************a.....",
"...************************a....",
"..*******b**********b*******a...",
"..******bbb********bbb******a...",
".******bbbbb******bbbbb******a..",
".*******bbbbb****bbbbb*******a..",
"*********bbbbb**bbbbb*********a.",
"**********bbbbbbbbbb**********a.",
"***********bbbbbbbb***********aa",
"************bbbbbb************aa",
"************bbbbbb************aa",
"***********bbbbbbbb***********aa",
"**********bbbbbbbbbb**********aa",
"*********bbbbb**bbbbb*********aa",
".*******bbbbb****bbbbb*******aa.",
".******bbbbb******bbbbb******aa.",
"..******bbb********bbb******aaa.",
"..*******b**********b*******aa..",
"...************************aaa..",
"....**********************aaa...",
"....a********************aaa....",
".....a******************aaa.....",
"......a****************aaa......",
".......aa************aaaa.......",
".........aa********aaaaa........",
"...........aaaaaaaaaaa..........",
".............aaaaaaa............"};

可以看出如果XMP图像有一定的可读性。

简单使用例子
  • 运行效果:
  • 代码:
#include <QApplication>
#include <QHBoxLayout>
#include <QLabel>

/* XPM */
static const char * const information_xpm[]={
"32 32 5 1",
". c None",
"c c #000000",
"* c #999999",
"a c #ffffff",
"b c #0000ff",
"...........********.............",
"........***aaaaaaaa***..........",
"......**aaaaaaaaaaaaaa**........",
".....*aaaaaaaaaaaaaaaaaa*.......",
"....*aaaaaaaabbbbaaaaaaaac......",
"...*aaaaaaaabbbbbbaaaaaaaac.....",
"..*aaaaaaaaabbbbbbaaaaaaaaac....",
".*aaaaaaaaaaabbbbaaaaaaaaaaac...",
".*aaaaaaaaaaaaaaaaaaaaaaaaaac*..",
"*aaaaaaaaaaaaaaaaaaaaaaaaaaaac*.",
"*aaaaaaaaaabbbbbbbaaaaaaaaaaac*.",
"*aaaaaaaaaaaabbbbbaaaaaaaaaaac**",
"*aaaaaaaaaaaabbbbbaaaaaaaaaaac**",
"*aaaaaaaaaaaabbbbbaaaaaaaaaaac**",
"*aaaaaaaaaaaabbbbbaaaaaaaaaaac**",
"*aaaaaaaaaaaabbbbbaaaaaaaaaaac**",
".*aaaaaaaaaaabbbbbaaaaaaaaaac***",
".*aaaaaaaaaaabbbbbaaaaaaaaaac***",
"..*aaaaaaaaaabbbbbaaaaaaaaac***.",
"...caaaaaaabbbbbbbbbaaaaaac****.",
"....caaaaaaaaaaaaaaaaaaaac****..",
".....caaaaaaaaaaaaaaaaaac****...",
"......ccaaaaaaaaaaaaaacc****....",
".......*cccaaaaaaaaccc*****.....",
"........***cccaaaac*******......",
"..........****caaac*****........",
".............*caaac**...........",
"...............caac**...........",
"................cac**...........",
".................cc**...........",
"..................***...........",
"...................**..........."};

/* XPM */
static const char* const warning_xpm[]={
"32 32 4 1",
". c None",
"a c #ffff00",
"* c #000000",
"b c #999999",
".............***................",
"............*aaa*...............",
"...........*aaaaa*b.............",
"...........*aaaaa*bb............",
"..........*aaaaaaa*bb...........",
"..........*aaaaaaa*bb...........",
".........*aaaaaaaaa*bb..........",
".........*aaaaaaaaa*bb..........",
"........*aaaaaaaaaaa*bb.........",
"........*aaaa***aaaa*bb.........",
".......*aaaa*****aaaa*bb........",
".......*aaaa*****aaaa*bb........",
"......*aaaaa*****aaaaa*bb.......",
"......*aaaaa*****aaaaa*bb.......",
".....*aaaaaa*****aaaaaa*bb......",
".....*aaaaaa*****aaaaaa*bb......",
"....*aaaaaaaa***aaaaaaaa*bb.....",
"....*aaaaaaaa***aaaaaaaa*bb.....",
"...*aaaaaaaaa***aaaaaaaaa*bb....",
"...*aaaaaaaaaa*aaaaaaaaaa*bb....",
"..*aaaaaaaaaaa*aaaaaaaaaaa*bb...",
"..*aaaaaaaaaaaaaaaaaaaaaaa*bb...",
".*aaaaaaaaaaaa**aaaaaaaaaaa*bb..",
".*aaaaaaaaaaa****aaaaaaaaaa*bb..",
"*aaaaaaaaaaaa****aaaaaaaaaaa*bb.",
"*aaaaaaaaaaaaa**aaaaaaaaaaaa*bb.",
"*aaaaaaaaaaaaaaaaaaaaaaaaaaa*bbb",
"*aaaaaaaaaaaaaaaaaaaaaaaaaaa*bbb",
".*aaaaaaaaaaaaaaaaaaaaaaaaa*bbbb",
"..*************************bbbbb",
"....bbbbbbbbbbbbbbbbbbbbbbbbbbb.",
".....bbbbbbbbbbbbbbbbbbbbbbbbb.."};
/* XPM */
static const char* const critical_xpm[]={
"32 32 4 1",
". c None",
"a c #999999",
"* c #ff0000",
"b c #ffffff",
"...........********.............",
".........************...........",
".......****************.........",
"......******************........",
".....********************a......",
"....**********************a.....",
"...************************a....",
"..*******b**********b*******a...",
"..******bbb********bbb******a...",
".******bbbbb******bbbbb******a..",
".*******bbbbb****bbbbb*******a..",
"*********bbbbb**bbbbb*********a.",
"**********bbbbbbbbbb**********a.",
"***********bbbbbbbb***********aa",
"************bbbbbb************aa",
"************bbbbbb************aa",
"***********bbbbbbbb***********aa",
"**********bbbbbbbbbb**********aa",
"*********bbbbb**bbbbb*********aa",
".*******bbbbb****bbbbb*******aa.",
".******bbbbb******bbbbb******aa.",
"..******bbb********bbb******aaa.",
"..*******b**********b*******aa..",
"...************************aaa..",
"....**********************aaa...",
"....a********************aaa....",
".....a******************aaa.....",
"......a****************aaa......",
".......aa************aaaa.......",
".........aa********aaaaa........",
"...........aaaaaaaaaaa..........",
".............aaaaaaa............"};

/* XPM */
static const char *const question_xpm[] = {
"32 32 5 1",
". c None",
"c c #000000",
"* c #999999",
"a c #ffffff",
"b c #0000ff",
"...........********.............",
"........***aaaaaaaa***..........",
"......**aaaaaaaaaaaaaa**........",
".....*aaaaaaaaaaaaaaaaaa*.......",
"....*aaaaaaaaaaaaaaaaaaaac......",
"...*aaaaaaaabbbbbbaaaaaaaac.....",
"..*aaaaaaaabaaabbbbaaaaaaaac....",
".*aaaaaaaabbaaaabbbbaaaaaaaac...",
".*aaaaaaaabbbbaabbbbaaaaaaaac*..",
"*aaaaaaaaabbbbaabbbbaaaaaaaaac*.",
"*aaaaaaaaaabbaabbbbaaaaaaaaaac*.",
"*aaaaaaaaaaaaabbbbaaaaaaaaaaac**",
"*aaaaaaaaaaaaabbbaaaaaaaaaaaac**",
"*aaaaaaaaaaaaabbaaaaaaaaaaaaac**",
"*aaaaaaaaaaaaabbaaaaaaaaaaaaac**",
"*aaaaaaaaaaaaaaaaaaaaaaaaaaaac**",
".*aaaaaaaaaaaabbaaaaaaaaaaaac***",
".*aaaaaaaaaaabbbbaaaaaaaaaaac***",
"..*aaaaaaaaaabbbbaaaaaaaaaac***.",
"...caaaaaaaaaabbaaaaaaaaaac****.",
"....caaaaaaaaaaaaaaaaaaaac****..",
".....caaaaaaaaaaaaaaaaaac****...",
"......ccaaaaaaaaaaaaaacc****....",
".......*cccaaaaaaaaccc*****.....",
"........***cccaaaac*******......",
"..........****caaac*****........",
".............*caaac**...........",
"...............caac**...........",
"................cac**...........",
".................cc**...........",
"..................***...........",
"...................**..........."};

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    QWidget w;
    QHBoxLayout *layout = new QHBoxLayout();

    QLabel infoLabel;
    infoLabel.setPixmap(QPixmap(information_xpm));
    layout->addWidget(&infoLabel);

    QLabel warningLabel;
    warningLabel.setPixmap(QPixmap(warning_xpm));
    layout->addWidget(&warningLabel);

    QLabel criticalLabel;
    criticalLabel.setPixmap(QPixmap(critical_xpm));
    layout->addWidget(&criticalLabel);

    w.setLayout(layout);
    w.show();

    return a.exec();
}
png转xpm格式工具
https://cn.office-converter.com/PNG-to-XPM

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