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#include <iup.h>
#include <cd.h>
#include <cdiup.h>
#include <cddbuf.h>
#include <im.h>
#include <im_image.h>
#include <stdio.h>
#include <string.h>
/* TODO:
cdCanvasPixel is not apropriate, must use cdCanvasLine for continuity.
if resized, the content is lost
SaveAs is not implemented
*/
static int cbCanvasRepaint(Ihandle* iup_canvas)
{
cdCanvas* dbuffer_canvas = (cdCanvas*)IupGetAttribute(iup_canvas, "cdCanvasDBuf");
cdCanvasActivate(dbuffer_canvas);
cdCanvasFlush(dbuffer_canvas);
return IUP_DEFAULT;
}
static int drawing = 0;
static long GetFgColor(Ihandle* ih)
{
int r, g, b;
Ihandle* fgcolor_but = IupGetDialogChild(ih, "fgcolor_but");
sscanf(IupGetAttribute(fgcolor_but, "BGCOLOR"), "%d %d %d", &r, &g, &b);
return cdEncodeColor((unsigned char)r, (unsigned char)g, (unsigned char)b);
}
static int cbCanvasButton(Ihandle* ih, int but, int pressed, int x, int y)
{
if (but == IUP_BUTTON1 && pressed)
{
cdCanvas* dbuffer_canvas = (cdCanvas*)IupGetAttribute(ih, "cdCanvasDBuf");
long fgcolor = GetFgColor(ih);
cdCanvasActivate(dbuffer_canvas);
cdCanvasPixel(dbuffer_canvas, x, cdCanvasInvertYAxis(dbuffer_canvas, y), fgcolor);
cdCanvasFlush(dbuffer_canvas);
drawing = 1;
}
else
drawing = 0;
return IUP_DEFAULT;
}
static int cbCanvasMotion(Ihandle *ih, int x, int y, char *status)
{
if (iup_isbutton1(status) && drawing)
{
cdCanvas* dbuffer_canvas = (cdCanvas*)IupGetAttribute(ih, "cdCanvasDBuf");
long fgcolor = GetFgColor(ih);
cdCanvasActivate(dbuffer_canvas);
cdCanvasPixel(dbuffer_canvas, x, cdCanvasInvertYAxis(dbuffer_canvas, y), fgcolor);
cdCanvasFlush(dbuffer_canvas);
}
return IUP_DEFAULT;
}
static int cbCanvasMap(Ihandle* ih)
{
cdCanvas* cd_canvas = cdCreateCanvas(CD_IUP, ih);
cdCanvas* dbuffer_canvas = cdCreateCanvas(CD_DBUFFER, cd_canvas);
IupSetAttribute(IupGetDialog(ih), "cdCanvas", (char*)cd_canvas);
IupSetAttribute(IupGetDialog(ih), "cdCanvasDBuf", (char*)dbuffer_canvas);
return IUP_DEFAULT;
}
static int cbDialogClose(Ihandle* ih)
{
cdCanvas* cd_canvas = (cdCanvas*)IupGetAttribute(ih, "cdCanvas");
cdCanvas* dbuffer_canvas = (cdCanvas*)IupGetAttribute(ih, "cdCanvasDBuf");
if (dbuffer_canvas) cdKillCanvas(dbuffer_canvas);
if (cd_canvas) cdKillCanvas(cd_canvas);
IupSetAttribute(ih, "cdCanvas", NULL);
IupSetAttribute(ih, "cdCanvasDBuf", NULL);
return IUP_CLOSE;
}
static int cbMenuNew(Ihandle* ih)
{
cdCanvas* dbuffer_canvas = (cdCanvas*)IupGetAttribute(ih, "cdCanvasDBuf");
cdCanvasActivate(dbuffer_canvas);
cdCanvasClear(dbuffer_canvas);
cdCanvasFlush(dbuffer_canvas);
return IUP_DEFAULT;
}
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 cbMenuOpen(Ihandle* ih)
{
int error;
char file_name[200] = "*.*";
imImage* image;
cdCanvas* dbuffer_canvas = (cdCanvas*)IupGetAttribute(IupGetDialog(ih), "cdCanvasDBuf");
if (IupGetFile(file_name) != 0)
return IUP_DEFAULT;
image = imFileImageLoadBitmap(file_name, 0, &error);
if (error) PrintError(error);
if (!image) return IUP_DEFAULT;
cdCanvasActivate(dbuffer_canvas);
cdCanvasClear(dbuffer_canvas);
imcdCanvasPutImage(dbuffer_canvas, image, 0, 0, image->width, image->height, 0, 0, 0, 0);
imImageDestroy(image);
cdCanvasFlush(dbuffer_canvas);
return IUP_DEFAULT;
}
static int cbMenuSaveAs(Ihandle* ih)
{
return IUP_DEFAULT;
}
static int cbFgColor(Ihandle* ih)
{
Ihandle* color_dlg = IupColorDlg();
IupSetAttributeHandle(color_dlg, "PARENTDIALOG", IupGetDialog(ih));
IupSetAttribute(color_dlg, "TITLE", "Choose Color");
IupSetAttribute(color_dlg, "VALUE", IupGetAttribute(ih, "BGCOLOR"));
IupPopup(color_dlg, IUP_CENTER, IUP_CENTER);
if (IupGetInt(color_dlg, "STATUS")==1)
{
char* value = IupGetAttribute(color_dlg, "VALUE");
IupStoreAttribute(ih, "BGCOLOR", value);
}
IupDestroy(color_dlg);
return IUP_DEFAULT;
}
static int cbMenuAbout(void)
{
IupMessage("About", "Simple Paint\nVersion 1.0");
return IUP_DEFAULT;
}
static Ihandle* CreateDialog(void)
{
Ihandle *iup_dialog, *iup_canvas, *menu;
menu = IupMenu(
IupSubmenu("&File", IupMenu(
IupSetCallbacks(IupItem("New", NULL), "ACTION", cbMenuNew, NULL),
IupSetCallbacks(IupItem("Open...\tCtrl+O", NULL), "ACTION", cbMenuOpen, NULL),
IupSetCallbacks(IupItem("Save As...", NULL), "ACTION", cbMenuSaveAs, NULL),
IupSetCallbacks(IupItem("E&xit", NULL), "ACTION", cbDialogClose, NULL), /* can do that because the menu inherit from the dialog */
NULL)),
IupSubmenu("&Help", IupMenu(
IupSetCallbacks(IupItem("About", NULL), "ACTION", (Icallback)cbMenuAbout, NULL),
NULL)),
NULL);
iup_canvas = IupCanvas(NULL);
IupSetCallback(iup_canvas, "BUTTON_CB", (Icallback)cbCanvasButton);
IupSetCallback(iup_canvas, "MOTION_CB", (Icallback)cbCanvasMotion);
IupSetCallback(iup_canvas, "ACTION", cbCanvasRepaint);
IupSetCallback(iup_canvas, "MAP_CB", cbCanvasMap);
iup_dialog = IupDialog(
IupVbox(
IupSetAttributes(IupHbox(
IupSetCallbacks(IupSetAttributes(IupButton(NULL, NULL), "IMAGE=IUP_FileNew, FLAT=Yes"), "ACTION", (Icallback)cbMenuNew, NULL),
IupSetCallbacks(IupSetAttributes(IupButton(NULL, NULL), "IMAGE=IUP_FileOpen, FLAT=Yes"), "ACTION", (Icallback)cbMenuOpen, NULL),
IupSetCallbacks(IupSetAttributes(IupButton(NULL, NULL), "IMAGE=IUP_FileSave, FLAT=Yes"), "ACTION", (Icallback)cbMenuSaveAs, NULL),
IupSetAttributes(IupFill(), "SIZE=50"),
IupLabel("Color:"),
IupSetCallbacks(IupSetAttributes(IupButton(NULL, NULL), "BGCOLOR=\"0 0 0\", SIZE=20x, FLAT=Yes, NAME=fgcolor_but"), "ACTION", (Icallback)cbFgColor, NULL),
NULL), "MARGIN=5x5, GAP=5, ALIGNMENT=ACENTER"),
iup_canvas,
NULL)
);
IupSetCallback(iup_dialog, "CLOSE_CB", cbDialogClose);
IupSetCallback(iup_dialog, "K_cO", cbMenuOpen),
IupSetAttribute(iup_dialog, "SIZE", "HALFxHALF"); /* initial size */
IupSetAttribute(iup_dialog, "TITLE", "Simple Paint");
IupSetAttributeHandle(iup_dialog, "MENU", menu);
return iup_dialog;
}
int main(int argc, char* argv[])
{
Ihandle* dlg;
IupOpen(&argc, &argv);
IupImageLibOpen();
dlg = CreateDialog();
IupShow(dlg);
IupMainLoop();
IupDestroy(dlg);
IupClose();
return 0;
}
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