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/* IM 3 sample that shows an image.
Needs "im.lib", "iup.lib", "cd.lib" and "cdiup.lib".
Usage: im_view <file_name>
Example: im_view test.tif
Click on image to open another file.
*/
#include <iup.h>
#include <cd.h>
#include <cdiup.h>
#include <im.h>
#include <im_image.h>
#include <stdio.h>
#include <string.h>
static int disable_repaint = 0; /* used to optimize repaint, while opening a new file */
static void PrintError(int error)
{
switch (error)
{
case IM_ERR_OPEN:
IupMessage("IM", "Error Opening File.");
break;
case IM_ERR_MEM:
IupMessage("IM", "Insuficient memory.");
break;
case IM_ERR_ACCESS:
IupMessage("IM", "Error Accessing File.");
break;
case IM_ERR_DATA:
IupMessage("IM", "Image type not Suported.");
break;
case IM_ERR_FORMAT:
IupMessage("IM", "Invalid Format.");
break;
case IM_ERR_COMPRESS:
IupMessage("IM", "Invalid or unsupported compression.");
break;
default:
IupMessage("IM", "Unknown Error.");
}
}
static int cbRepaint(Ihandle* iup_canvas)
{
cdCanvas* cd_canvas = (cdCanvas*)IupGetAttribute(iup_canvas, "cdCanvas");
imImage* image = (imImage*)IupGetAttribute(iup_canvas, "imImage");
if (!cd_canvas || disable_repaint)
return IUP_DEFAULT;
cdCanvasActivate(cd_canvas);
cdCanvasClear(cd_canvas);
if (!image)
return IUP_DEFAULT;
imcdCanvasPutImage(cd_canvas, image, 0, 0, image->width, image->height, 0, 0, 0, 0);
cdCanvasFlush(cd_canvas);
return IUP_DEFAULT;
}
static void ShowImage(char* file_name, Ihandle* iup_dialog)
{
int error;
imImage* image = (imImage*)IupGetAttribute(iup_dialog, "imImage");
if (image) imImageDestroy(image);
IupSetAttribute(iup_dialog, "imImage", NULL);
image = imFileImageLoadBitmap(file_name, 0, &error);
if (error) PrintError(error);
if (!image) return;
IupSetAttribute(iup_dialog, "imImage", (char*)image);
IupStoreAttribute(iup_dialog, "TITLE", file_name);
cbRepaint(iup_dialog); /* we can do this because canvas inherit attributes from the dialog */
}
static int cbButton(Ihandle* iup_canvas, int but, int pressed)
{
char file_name[200] = "*.*";
if (but != IUP_BUTTON1 || !pressed)
return IUP_DEFAULT;
disable_repaint = 1;
if (IupGetFile(file_name) != 0)
{
disable_repaint = 0;
return IUP_DEFAULT;
}
disable_repaint = 0;
ShowImage(file_name, IupGetDialog(iup_canvas));
return IUP_DEFAULT;
}
static int cbClose(Ihandle* iup_dialog)
{
cdCanvas* cd_canvas = (cdCanvas*)IupGetAttribute(iup_dialog, "cdCanvas");
imImage* image = (imImage*)IupGetAttribute(iup_dialog, "imImage");
if (cd_canvas) cdKillCanvas(cd_canvas);
if (image) imImageDestroy(image);
IupSetAttribute(iup_dialog, "cdCanvas", NULL);
IupSetAttribute(iup_dialog, "imImage", NULL);
return IUP_CLOSE;
}
static Ihandle* CreateDialog(void)
{
Ihandle *iup_dialog;
Ihandle *iup_canvas;
cdCanvas* cd_canvas;
iup_canvas = IupCanvas("do_nothing");
IupSetAttribute(iup_canvas, IUP_BUTTON_CB, "cbButton");
IupSetAttribute(iup_canvas, IUP_ACTION, "cbRepaint");
iup_dialog = IupDialog(iup_canvas);
IupSetAttribute(iup_dialog, IUP_CLOSE_CB, "cbClose");
IupSetAttribute(iup_dialog, IUP_SIZE, "HALFxHALF");
IupSetFunction("cbRepaint", (Icallback)cbRepaint);
IupSetFunction("cbButton", (Icallback)cbButton);
IupSetFunction("cbClose", (Icallback)cbClose);
IupMap(iup_dialog);
cd_canvas = cdCreateCanvas(CD_IUP, iup_canvas);
IupSetAttribute(iup_dialog, "cdCanvas", (char*)cd_canvas);
return iup_dialog;
}
int main(int argc, char* argv[])
{
Ihandle* dlg;
IupOpen();
dlg = CreateDialog();
IupShow(dlg);
/* Try to get a file name from the command line. */
if (argc > 1)
{
ShowImage(argv[1], dlg);
}
else
{
char file_name[1024] = "*.*";
if (IupGetFile(file_name) == 0)
{
ShowImage(file_name, dlg);
}
}
IupMainLoop();
IupDestroy(dlg);
IupClose();
return 1;
}
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