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#include <cairo/cairo.h>
#include <pango/pangocairo.h>
#include <stdio.h>
#include <stdlib.h>
#define FONT "Monospace 10"
// struct for storing dimensions used for calculations, movement, etc.
struct dimensions {
// Multiplication factors
int row_count; /* rows */
int column_count; /* columns */
// All of these are in units chosen by width in "calp.c"
// Most likely milimeters (mm)
double paper_width; /* paper width */
double paper_height; /* paper height */
double month_width; /* month width */
double month_height; /* month height */
double month_top_corner_x;
double month_top_corner_y;
double day_width; /* day box width */
double day_height; /* day box height */
double margin; /* margin */
};
// Fill entire background with current color
int fill_bg(cairo_t *c) {
cairo_paint(c);
return 0;
}
// Draw text at a certain point.
// Creates and destroys layout within the scope of the function
// Is that performant when looped over 365 operations?
int draw_text (cairo_t *c, double x, double y, char *text) {
PangoLayout *layout;
PangoFontDescription *desc;
// Create a PangoLayout, setting font & text
layout = pango_cairo_create_layout(c);
desc = pango_font_description_from_string(FONT);
pango_layout_set_font_description(layout, desc);
pango_font_description_free(desc);
pango_layout_set_text(layout, text, -1);
//printf("text: %s\n", text);
cairo_move_to (c, x, y);
pango_cairo_show_layout (c, layout);
g_object_unref(layout);
return 0;
}
// Calculate dimenions for one page and stores it into the dimensions struct
int calculate_dimensions(double pw, double ph, struct dimensions *d) {
// Percentage of page that should be margin
double margin = 0.1 * pw;
// Everything other than margin
double month_width = 0.8 * pw;
// width of day is 1/7th of total width
double box_width = month_width / 7.0;
// Width = Height; Day Box is a square
double box_height = box_width;
// Height is based on how tall # of weeks are
double month_height = box_height * 6.0;
d->row_count = 6;
d->column_count = 7;
d->paper_width = pw;
d->paper_height = ph;
d->margin = margin;
d->month_width = month_width;
d->month_top_corner_x = margin;
d->month_top_corner_y = ph - margin - month_height;
d->month_height = month_height;
d->day_width = box_width;
d->day_height = box_height;
return 0;
}
int print_dimensions(struct dimensions *d) {
printf("row count: %d\n", d->row_count);
printf("column count: %d\n", d->column_count);
printf("paper width: %.2f\n", d->paper_width);
printf("paper height: %.2f\n", d->paper_height);
printf("margin: %.2f\n", d->margin);
printf("month width: %.2f\n", d->month_width);
printf("month height: %.2f\n", d->month_height);
printf("month_top_corner_x: %f\n", d->month_top_corner_x);
printf("month_top_corner_y: %f\n", d->month_top_corner_y);
printf("day width: %.2f\n", d->day_width);
printf("day height: %.2f\n", d->day_height);
return 0;
}
// Draws the lines for a month
//int draw_month_grid (cairo_t *c, int month, int start_day) {
//int draw_month_grid (cairo_t *c, struct dimensions *d) {
// cairo_move_to (c, d->month_top_corner_x, d->month_top_corner_y);
// return 0;
//}
// Draws one month using daybox sub-surface & context, main context, and dimension struct
int draw_month (cairo_t *c, cairo_t *cd, cairo_surface_t *s, struct dimensions *d, int days_in_month) {
double cursor_x = d->month_top_corner_x;
double cursor_y = d->month_top_corner_y;
int increment = 0;
char str[20];
for (int i = 0; i < d->row_count; i++) {
for (int k = 0; k < d->column_count; k++) {
if (increment < days_in_month) {
cairo_set_source_rgb (cd, 0.0, 0.0, 255.0);
cairo_paint(cd);
cairo_set_source_rgb (cd, 255.0, 255.0, 255.0);
snprintf(str, sizeof(str), "%d", increment + 1);
draw_text(cd, 4.0, 4.0, str);
cairo_set_source_surface (c, s, cursor_x, cursor_y);
cursor_x = cursor_x + d->day_width;
cairo_paint(c);
increment++;
} else {
return 0;
}
}
cursor_x = d->month_top_corner_x;
cursor_y = cursor_y + d->day_height;
}
cairo_stroke(cd);
return 0;
}
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