glimpse.h File Reference

#include <chitralekha.h>
#include <widgets/base.h>
#include <widgets/window.h>

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Go to the source code of this file.

Classes
struct	_thumbox_
struct	_glimparea_

Macros
#define	__GLIPMSE_H__
#define	THUMB_W   200
#define	THUMB_H   200

Typedefs
typedef struct _thumbox_	thumbnail_t
typedef struct _glimparea_	GlimpBox

Functions
void	GlimpseWindowPaint (ChWindow *win)
	GlimpseWindowPaint – paint the glimpse window.
void	compute_thumb_size (int src_w, int src_h, int max_w, int max_h, int *out_w, int *out_h)
	compute_thumb_size – computes the best possible thumbnail size out of given image width and height
void	thumbnail_box (ChCanvas *canvas, uint8_t *src, int src_w, int src_h, uint8_t *dst, int dst_x, int dst_y, int dst_w, int dst_h)
	thumbnail_box – calculate and prepare the thumbnail using box_filter algorithm
void	_Glimpse_draw_thumb (ChCanvas *canv, char *path, int dst_x, int dst_y, int max_w, int max_h)
	_Glimpse_draw_thumb – load and draw thumbnail to canvas
GlimpBox *	_Glimpse_create_glimbox (int xloc, int yloc, int width, int height)
thumbnail_t *	_Glimpse_create_thumbnail (int xloc, int yloc, int width, int height)
void	_Glimpse_add_thumbnail (GlimpBox *box, thumbnail_t *thumb)
	_Glimpse_add_thumbnail – adds thumbnail box to glimpbox list
void	_Glimpse_box_repaint (GlimpBox *box, ChWindow *win)
	_Glimpse_box_repaint – repaint glimpse area
GlimpBox *	_Glimpse_get_main_glimp ()
	_Glimpse_get_main_glimp – return main glimp area

Macro Definition Documentation

__GLIPMSE_H__

#define __GLIPMSE_H__

BSD 2-Clause License

Copyright (c) 2022, Manas Kamal Choudhury All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

THUMB_H

#define THUMB_H   200

THUMB_W

#define THUMB_W   200

Typedef Documentation

GlimpBox

typedef struct _glimparea_ GlimpBox

thumbnail_t

typedef struct _thumbox_ thumbnail_t

Function Documentation

_Glimpse_add_thumbnail()

void _Glimpse_add_thumbnail ( GlimpBox *  box, thumbnail_t *  thumb  )

extern

_Glimpse_add_thumbnail – adds thumbnail box to glimpbox list

Parameters

box	– Pointer to glimpse box
thumb	– pointer to thumnail data

_Glimpse_box_repaint()

void _Glimpse_box_repaint ( GlimpBox *  box, ChWindow *  win  )

extern

_Glimpse_box_repaint – repaint glimpse area

Parameters

box	– Pointer to glimps box
win	– Pointer to main window

_Glimpse_create_glimbox()

GlimpBox * _Glimpse_create_glimbox ( int  xloc, int  yloc, int  width, int  height  )

extern

_Glimpse_create_glimbox – creates a glimbox bounding area

Parameters

xloc	– x location within glimpse
yloc	– y location within glimpse
width	– width of the box area
height	– height of the box area

_Glimpse_create_thumbnail()

thumbnail_t * _Glimpse_create_thumbnail ( int  xloc, int  yloc, int  width, int  height  )

extern

_Glimpse_create_thumbnail – create a thumbox

Parameters

xloc	– x location within glimpse thumb area
yloc	– y location within glimpse thumb area
width	– width of the thumb box
height	– height of thumb box

_Glimpse_draw_thumb()

void _Glimpse_draw_thumb ( ChCanvas *  canv, char *  path, int  dst_x, int  dst_y, int  max_w, int  max_h  )

extern

_Glimpse_draw_thumb – load and draw thumbnail to canvas

Parameters

canv	– Pointer to canvas
path	– path of the file
dst_x	– x coord
dst_y	– y coord
max_w	– maximum width
max_h	– maximum height

_Glimpse_get_main_glimp()

GlimpBox * _Glimpse_get_main_glimp ( )

extern

_Glimpse_get_main_glimp – return main glimp area

compute_thumb_size()

void compute_thumb_size	(	int	src_w,
		int	src_h,
		int	max_w,
		int	max_h,
		int *	out_w,
		int *	out_h
	)

compute_thumb_size – computes the best possible thumbnail size out of given image width and height

Parameters

src_w	– source image width
src_h	– source image height
max_w	– desired maximum width
max_h	– desired maximum height
out_w	– best possible width
out_h	– best possible height

GlimpseWindowPaint()

void GlimpseWindowPaint ( ChWindow *  win )

extern

GlimpseWindowPaint – paint the glimpse window.

Parameters

win	– Pointer to window

thumbnail_box()

void thumbnail_box ( ChCanvas *  canvas, uint8_t *  src, int  src_w, int  src_h, uint8_t *  dst, int  dst_x, int  dst_y, int  dst_w, int  dst_h  )

extern

thumbnail_box – calculate and prepare the thumbnail using box_filter algorithm

Parameters

canvas	– pointer to canvas
src	– source image buffer
src_w	– source image width
src_h	– source image height
dst	– destination image buffer
dst_w	– destination image width
dst_h	– destination image height