I have the problem with a combination of ImageMagick + Draw + GTK3 + Linux. We have an original image (image 1). Code that spread below, works as expected when it excludes functions gtk_init and show_image. This creates rounded corners (image 2) with radiuces from the array corners, regardless of whether I use relative or absolute coordinates. Image 3 you can see how to break the result after enabling gtk_init. In the image 4, the is reslut of the function show_image.Image 3 and 4 that only a portion of the original image, because it turns out wrong coordinates of endpoints.
Why it makes ImageMagick and how can I solve this problem?
1)
2)
3)
4)
Code: Select all
#include <stdio.h>
#include <wand/magick_wand.h>
#include <glib.h>
#include <glib-object.h>
#include <gtk/gtk.h>
enum {
NIM_CORNER_TL,
NIM_CORNER_TR,
NIM_CORNER_BR,
NIM_CORNER_BL,
NIM_CORNER_LAST
};
void window_destroy_cb (GtkWidget *widget)
{
gtk_main_quit ();
}
/*
Function to convert MagickWand to GdkPixbuf and show this in the GtkWindow
*/
void show_image (MagickWand *wand)
{
GdkPixbuf *pixbuf;
gint width;
gint height;
gint rowstride;
gint row;
guchar *pixels;
width = MagickGetImageWidth (wand);
height = MagickGetImageHeight (wand);
pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, width, height);
pixels = gdk_pixbuf_get_pixels (pixbuf);
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
MagickSetImageDepth (wand, 8);
for (row = 0; row < height; row++) {
guchar *data = pixels + row * rowstride;
MagickExportImagePixels (wand, 0, row, width, 1, "RGBA", CharPixel, data);
}
if (pixbuf) {
GtkWidget *image;
GtkWidget *window;
image = gtk_image_new_from_pixbuf (pixbuf);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_container_add (GTK_CONTAINER (window), image);
gtk_widget_show_all (window);
g_signal_connect (window, "destroy", G_CALLBACK (window_destroy_cb), NULL);
gtk_main ();
}
}
/*
Function to create the rounding corners and save result to test file.
*/
gboolean nim_imaging_round_corners (gchar *filename, const gdouble corners [NIM_CORNER_LAST])
{
gboolean response = FALSE;
MagickWand *m_wand = NULL;
MagickWand *l_wand = NULL;
PixelWand *p_wand = NULL;
DrawingWand *d_wand = NULL;
gdouble width, height;
gdouble ctl = ABS (corners [NIM_CORNER_TL]);
gdouble cbl = ABS (corners [NIM_CORNER_BL]);
gdouble ctr = ABS (corners [NIM_CORNER_TR]);
gdouble cbr = ABS (corners [NIM_CORNER_BR]);
gdouble x, y;
// Padding
#define LIMIT 1.5
MagickWandGenesis ();
m_wand = NewMagickWand ();
l_wand = NewMagickWand ();
p_wand = NewPixelWand ();
d_wand = NewDrawingWand ();
MagickReadImage (l_wand, filename);
width = (gdouble) MagickGetImageWidth (l_wand);
height = (gdouble) MagickGetImageHeight (l_wand);
PixelSetColor (p_wand, "none");
MagickNewImage (m_wand, width, height, p_wand);
width -= LIMIT;
height -= LIMIT;
PixelSetColor (p_wand, "white");
DrawSetFillColor (d_wand, p_wand);
DrawPathStart (d_wand);
/*
I tring the absolute and relative coordinates
but its work without GTK and failed with GTK.
WHY???
*/
DrawPathMoveToAbsolute (d_wand, ctl, LIMIT);
DrawPathLineToHorizontalAbsolute (d_wand, width - ctr);
if (corners [NIM_CORNER_TR] >= 0) {
x = width;
y = LIMIT;
} else {
x = width - ctr;
y = ctr;
}
DrawPathCurveToQuadraticBezierAbsolute (d_wand, x, y, width, ctr);
DrawPathLineToVerticalAbsolute (d_wand, height - cbr);
if (corners [NIM_CORNER_BR] >= 0) {
x = width;
y = height;
} else {
x = width - cbr;
y = height - cbr;
}
DrawPathCurveToQuadraticBezierAbsolute (d_wand, x, y, width - cbr, height);
DrawPathLineToHorizontalAbsolute (d_wand, cbl);
if (corners [NIM_CORNER_BL] >= 0) {
x = LIMIT;
y = height;
} else {
x = cbl;
y = height - cbl;
}
DrawPathCurveToQuadraticBezierAbsolute (d_wand, x, y, LIMIT, height - cbl);
DrawPathLineToVerticalAbsolute (d_wand, ctl);
if (corners [NIM_CORNER_TL] >= 0) {
x = LIMIT;
y = LIMIT;
} else {
x = ctl;
y = ctl;
}
DrawPathCurveToQuadraticBezierAbsolute (d_wand, x, y, ctl, LIMIT);
DrawPathClose (d_wand);
DrawPathFinish (d_wand);
MagickDrawImage (m_wand, d_wand);
MagickCompositeImage (m_wand, l_wand, SrcInCompositeOp, 0, 0);
MagickWriteImage (m_wand, "mask_result.png");
// Comment this line to exclude creates GdkPixbuf and GtkWindow
show_image (m_wand);
if (m_wand)
m_wand = DestroyMagickWand (m_wand);
if (l_wand)
l_wand = DestroyMagickWand (l_wand);
if (d_wand)
d_wand = DestroyDrawingWand (d_wand);
if (p_wand)
p_wand = DestroyPixelWand (p_wand);
MagickWandTerminus ();
return response;
}
int main(int argc, char **argv)
{
// Array of the radiuces of the corners
gdouble corners [NIM_CORNER_LAST] = {-15.0, 15.0, -15.0, 15.0};
// Comment this line to exclude GTK
gtk_init (&argc, &argv);
nim_imaging_round_corners (argv [1], corners);
return 0;
}
ImageMagick 6.7.9.8
Built the ImageMagick with flags:
Code: Select all
--with-modules
--disable-static
--disable-openmp
--with-wmf
--with-openexr
--with-xml
--with-lcms2
--with-jp2
--with-gslib
--with-gs-font-dir=/usr/share/fonts/Type1
--with-perl
--with-perl-options="INSTALLDIRS=vendor"
--with-lqr
--with-rsvg
--without-gvc
--without-djvu
--without-autotrace
--without-webp
--without-jbig
--without-fpx
--without-dps
--without-fftw
GTK3: gtk+-3.0 3.4.4
Link to download archive
https://docs.google.com/open?id=0B7bPA0 ... zl5cDFtUEk
