#include "system/surface_scaling.h"
#include <cairo.h>
#include <glib.h>

Include dependency graph for screen_metrics.h:

This graph shows which files directly or indirectly include this file:

Functions
G_BEGIN_DECLS double	dt_screen_dpi (void)

void	dt_screen_set_dpi (double dpi)

double	dt_screen_dpi_factor (void)

void	dt_screen_set_dpi_factor (double factor)

double	dt_screen_ppd (void)

void	dt_screen_set_ppd (double ppd)

gboolean	dt_screen_metrics_probed (void)

double	dt_screen_em_size (void)

void	dt_screen_set_em_size (double em)

static cairo_surface_t *	dt_cairo_image_surface_create (cairo_format_t format, int width, int height)

static cairo_surface_t *	dt_cairo_image_surface_create_for_data (unsigned char *data, cairo_format_t format, int width, int height, int stride)

static cairo_surface_t *	dt_cairo_image_surface_create_from_png (const char *filename)

static int	dt_cairo_image_surface_get_width (cairo_surface_t *surface)

static int	dt_cairo_image_surface_get_height (cairo_surface_t *surface)

Function Documentation

◆ dt_cairo_image_surface_create()

static cairo_surface_t * dt_cairo_image_surface_create	(	cairo_format_t	format,
		int	width,
		int	height
	)

inlinestatic

Definition at line 84 of file screen_metrics.h.

References dt_cairo_surface_create_at_scale(), dt_screen_ppd(), height, and width.

Referenced by _area_draw_callback(), _area_draw_callback(), _area_draw_callback(), _bottom_area_draw_callback(), _build_preview_fallback_surface(), _configure(), _darkroom_prepare_image_surface(), _draw_curve(), _init_drawing(), _lib_navigation_draw_callback(), _modulegroups_drag_begin(), _origin_color_draw(), _preview_draw(), _render_surface(), _target_color_draw(), _trigger_recompute(), area_draw(), checker_draw(), cluster_preview_draw(), denoiseprofile_draw(), dt_control_expose(), dt_gui_gtk_run(), dt_iop_basecurve_draw(), dt_iop_colorcorrection_draw(), dt_iop_levels_area_draw(), dt_iop_monochrome_draw(), dt_iop_tonecurve_draw(), dt_iop_tonecurve_draw(), dt_iop_tonecurve_draw(), dt_iop_tonecurve_draw(), dt_iop_zonesystem_bar_draw(), dt_iop_zonesystem_preview_draw(), illuminant_color_draw(), lowlight_draw(), origin_color_draw(), rawdenoise_draw(), rt_wdbar_draw(), and target_color_draw().

◆ dt_cairo_image_surface_create_for_data()

static cairo_surface_t * dt_cairo_image_surface_create_for_data	(	unsigned char *	data,
		cairo_format_t	format,
		int	width,
		int	height,
		int	stride
	)

inlinestatic

Definition at line 89 of file screen_metrics.h.

References dt_cairo_surface_create_for_data_at_scale(), dt_screen_ppd(), height, and width.

Referenced by _util_get_svg_img().

◆ dt_cairo_image_surface_create_from_png()

static cairo_surface_t * dt_cairo_image_surface_create_from_png ( const char * filename )

inlinestatic

Definition at line 95 of file screen_metrics.h.

References dt_cairo_surface_create_from_png_at_scale(), and dt_screen_ppd().

◆ dt_cairo_image_surface_get_height()

static int dt_cairo_image_surface_get_height ( cairo_surface_t * surface )

inlinestatic

Definition at line 105 of file screen_metrics.h.

References dt_cairo_surface_logical_height(), and dt_screen_ppd().

Referenced by _render_preview_surface(), and dt_control_expose().

◆ dt_cairo_image_surface_get_width()

static int dt_cairo_image_surface_get_width ( cairo_surface_t * surface )

inlinestatic

Definition at line 100 of file screen_metrics.h.

References dt_cairo_surface_logical_width(), and dt_screen_ppd().

Referenced by _render_preview_surface(), and dt_control_expose().

◆ dt_screen_dpi()

G_BEGIN_DECLS double dt_screen_dpi ( void )

Screen resolution in dots per inch. Defaults to 96.0 (the X/GDK default).

Definition at line 31 of file screen_metrics.c.

References dt_widget_dpi().

◆ dt_screen_dpi_factor()

double dt_screen_dpi_factor ( void )

dpi / 96, i.e. how much to scale UI lengths by. Defaults to 1.0.

Definition at line 34 of file screen_metrics.c.

References dt_widget_dpi_factor().

◆ dt_screen_em_size()

double dt_screen_em_size ( void )

Height of the theme font's "em", in pixels. Defaults to 16.0.

Definition at line 42 of file screen_metrics.c.

References dt_widget_em_size().

◆ dt_screen_metrics_probed()

gboolean dt_screen_metrics_probed ( void )

TRUE once something has actually interrogated a display and pushed real values.

The getters above are always safe to call, but they answer with neutral defaults until this returns TRUE. Use it where reporting an invented 96dpi/1.0 would be worse than reporting nothing – a crash report or a telemetry payload – and NOT as a "is there a GUI?" test for scaling, where the neutral defaults are exactly the right answer.

Definition at line 40 of file screen_metrics.c.

References dt_widget_metrics_probed().