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30466b9abb
gtk-gui.c: + added the method get_screen_dpi() that uses a simple formula to retrieve the actual screen DPI display.h: + use get_screen_dpi() in the SCALE_PRINT macro Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com> Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
#ifndef DISPLAY_H
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#define DISPLAY_H
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#include <cairo.h>
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#define SCALE_SCREEN 1.0
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#define SCALE_PRINT (1.0 / get_screen_dpi())
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extern void repaint_dive(void);
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extern void do_print(void);
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extern gdouble get_screen_dpi(void);
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/* Plot info with smoothing, velocity indication
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* and one-, two- and three-minute minimums and maximums */
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struct plot_info {
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int nr;
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int maxtime;
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int meandepth, maxdepth;
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int minpressure, maxpressure;
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int mintemp, maxtemp;
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double endtempcoord;
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double maxpp;
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gboolean has_ndl;
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struct plot_data *entry;
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};
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/*
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* Cairo scaling really is horribly horribly mis-designed.
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*
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* Which is sad, because I really like Cairo otherwise. But
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* the fact that the line width is scaled with the same scale
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* as the coordinate system is a f*&%ing disaster. So we
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* can't use it, and instead have this butt-ugly wrapper thing..
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*/
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struct graphics_context {
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int printer;
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cairo_t *cr;
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cairo_rectangle_t drawing_area;
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double maxx, maxy;
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double leftx, rightx;
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double topy, bottomy;
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unsigned int maxtime;
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struct plot_info pi;
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};
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typedef enum { SC_SCREEN, SC_PRINT } scale_mode_t;
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extern void plot(struct graphics_context *gc, struct dive *dive, scale_mode_t scale);
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extern void init_profile_background(struct graphics_context *gc);
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extern void attach_tooltip(int x, int y, int w, int h, const char *text);
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extern void get_plot_details(struct graphics_context *gc, int time, char *buf, size_t bufsize);
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struct options {
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enum { PRETTY, TABLE, TWOPERPAGE } type;
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int print_selected;
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};
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extern char zoomed_plot, dc_number;
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#endif
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