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#include <stdbool.h>
#include <stdlib.h>
#include <cairo/cairo.h>
#include <pango/pangocairo.h>
#include <wand/MagickWand.h>
#include "draw.h"
// Used for MagickWand
#define ThrowWandException(wand) \
{ \
char \
*description; \
\
ExceptionType \
severity; \
\
description=MagickGetException(wand,&severity); \
(void) fprintf(stderr,"%s %s %lu %s\n",GetMagickModule(),description); \
description=(char *) MagickRelinquishMemory(description); \
exit(-1); \
}
// Draw an image at a specific point
int draw_image(cairo_t *c, char *path, double x, double y) {
cairo_surface_t *image;
// Checks if the file exists. If it doesn't, warn the user that it was not found.
// A file not existing will not terminate the program, but simply not render the image.
FILE *file;
if((file = fopen(path, "r")) != NULL)
{
// file exists
fclose(file);
}
else
{
printf("Warning: image \'%s\' does not exist.\n", path);
return 1;
}
image = cairo_image_surface_create_from_png(path);
cairo_set_source_surface(c, image, x, y);
cairo_paint(c);
cairo_surface_destroy (image);
return 0;
}
unsigned long get_image_width(char *path) {
MagickBooleanType status;
MagickWand *wand;
MagickWandGenesis();
wand = NewMagickWand();
status = MagickReadImage(wand, path);
if (status == MagickFalse) {
ThrowWandException(wand);
}
unsigned long width = MagickGetImageWidth(wand);
wand = DestroyMagickWand(wand);
MagickWandTerminus();
return width;
}
unsigned long get_image_height(char *path) {
MagickBooleanType status;
MagickWand *wand;
MagickWandGenesis();
wand = NewMagickWand();
status = MagickReadImage(wand, path);
if (status == MagickFalse) {
ThrowWandException(wand);
}
unsigned long height = MagickGetImageHeight(wand);
wand = DestroyMagickWand(wand);
MagickWandTerminus();
return height;
}
// Resize an image to a specific width and height.
// Optionally create a new file to preserve the source image.
int resize_image(char *path, double width, double height, bool create_new) {
MagickBooleanType status;
MagickWand *wand;
MagickWandGenesis();
wand = NewMagickWand();
status = MagickReadImage(wand, path);
if (status == MagickFalse) {
ThrowWandException(wand);
}
MagickResetIterator(wand);
MagickResizeImage(wand, width, height, LanczosFilter, 1.0);
if (create_new == true) {
char new_path[30];
snprintf(new_path, sizeof(new_path), "%s.tmp", path);
status = MagickWriteImages(wand, new_path, MagickTrue);
} else {
status = MagickWriteImages(wand, path, MagickTrue);
}
if (status == MagickFalse) {
ThrowWandException(wand);
}
wand = DestroyMagickWand(wand);
MagickWandTerminus();
return 0;
}
// Create a cropped version of an image to a certain dimensions and position.
// Optionally create a new file to preserve the source image.
int crop_image(char *path, double width, double height, double x, double y, bool create_new) {
MagickBooleanType status;
MagickWand *wand;
MagickWandGenesis();
wand = NewMagickWand();
status = MagickReadImage(wand, path);
if (status == MagickFalse) {
ThrowWandException(wand);
}
MagickResetIterator(wand);
MagickCropImage(wand, width, height, x, y);
if (create_new == true) {
char new_path[30];
snprintf(new_path, sizeof(new_path), "%s.tmp", path);
status = MagickWriteImages(wand, new_path, MagickTrue);
} else {
status = MagickWriteImages(wand, path, MagickTrue);
}
if (status == MagickFalse) {
ThrowWandException(wand);
}
wand = DestroyMagickWand(wand);
MagickWandTerminus();
return 0;
}
int prepare_month_art(char *path, struct dimensions *d) {
if (!d->header_width || !d->header_height) {
printf("Error: header_width and header_height unknown.\n");
return 1;
}
double desired_ratio = d->header_width / d->header_height;
unsigned long width = get_image_width(path);
unsigned long height = get_image_height(path);
//double original_ratio = width / height;
// Landscape
if (desired_ratio > 1.0) {
}
// Portrait
if (desired_ratio < 1.0) {
}
printf("%lu x %lu\n", width, height);
return 0;
}
// Draw month art
int draw_month_art(cairo_t *c, struct dimensions *d, char *path) {
cairo_save(c);
double width = d->header_width;
// TODO: Make this relative to text height
double height = d->header_height - (d->margin * 3.0);
double cursor_x = d->margin;
double cursor_y = d->margin;
cairo_rectangle (c, d->margin, d->margin, width, height);
cairo_clip(c);
draw_image(c, path, cursor_x, cursor_y);
cairo_restore(c);
return 0;
}
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