scbstrokes.h File Reference

#include "scbstroke.h"

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Data Structures
struct	_ScbStrokes
Typedefs
typedef struct _ScbStrokes	ScbStrokes
typedef ScbStrokes *	ScbStrokesPtr
Functions
gboolean	erscribble_strokes_new (ScbStrokesPtr ptr)
void	erscribble_strokes_free (ScbStrokesPtr strokes)
void	erscribble_strokes_clear (ScbStrokesPtr strokes)
int	erscribble_strokes_get_count (const ScbStrokesPtr strokes)
void	erscribble_strokes_add_stroke (ScbStrokesPtr strokes, ScbStrokePtr stroke)
void	erscribble_strokes_add_strokes (ScbStrokesPtr dst, const ScbStrokesPtr src)
ScbStrokePtr	erscribble_strokes_detach_stroke (ScbStrokesPtr strokes, ScbStrokePtr stroke)
ScbStrokesPtr	erscribble_strokes_point_hit_test (ScbStrokesPtr strokes, ScbDevPointPtr point, const ScbHitTestCtxPtr ctx)
ScbStrokesPtr	erscribble_strokes_line_hit_test (ScbStrokesPtr strokes, ScbDevPointPtr point1, ScbDevPointPtr point2, const ScbHitTestCtxPtr ctx)
void	erscribble_strokes_erase_driver_draw (ScbStrokesPtr strokes)
void	erscribble_strokes_dump (ScbStrokesPtr strokes)
gboolean	erscribble_strokes_load (ScbStrokesPtr strokes, ScbStreamPtr stream, const int strokes_num)
gboolean	erscribble_strokes_write_stream (ScbStrokesPtr strokes, ScbStreamPtr stream)

Typedef Documentation

typedef struct _ScbStrokes ScbStrokes

typedef ScbStrokes* ScbStrokesPtr

Definition at line 69 of file scbstrokes.h.

Function Documentation

void erscribble_strokes_add_stroke	(	ScbStrokesPtr	strokes,
		ScbStrokePtr	stroke
	)

Definition at line 113 of file scbstrokes.c.

References ERSCRIBBLE_RET_IF, and _ScbStrokes::strokes.

Referenced by erscribble_strokes_line_hit_test(), erscribble_strokes_load(), and erscribble_strokes_point_hit_test().

00115 {
00116     ERSCRIBBLE_RET_IF(NULL == strokes || NULL == stroke, "Invalid storkes or stroke pointer!");
00117     strokes->strokes = g_list_append(strokes->strokes, stroke);
00118 }

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void erscribble_strokes_add_strokes	(	ScbStrokesPtr	dst,
		const ScbStrokesPtr	src
	)

Definition at line 121 of file scbstrokes.c.

References ERSCRIBBLE_RET_IF, and _ScbStrokes::strokes.

00123 {
00124     ERSCRIBBLE_RET_IF(NULL == dst || NULL == src, "Invalid pointer(s)!");
00125     dst->strokes = g_list_concat(dst->strokes, src->strokes);
00126 }

void erscribble_strokes_clear ( ScbStrokesPtr strokes )

Definition at line 95 of file scbstrokes.c.

References ERSCRIBBLE_RET_IF, and _ScbStrokes::strokes.

Referenced by erscribble_page_clear(), and erscribble_strokes_load().

00096 {
00097     ERSCRIBBLE_RET_IF(NULL == strokes, "Attempt to release NULL pointer!");
00098 
00099     g_list_free(strokes->strokes);
00100     strokes->strokes = NULL;
00101 }

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ScbStrokePtr erscribble_strokes_detach_stroke	(	ScbStrokesPtr	strokes,
		ScbStrokePtr	stroke
	)

Definition at line 129 of file scbstrokes.c.

References ERSCRIBBLE_RET_NULL_IF, and _ScbStrokes::strokes.

Referenced by erscribble_strokes_line_hit_test(), and erscribble_strokes_point_hit_test().

00131 {
00132     ERSCRIBBLE_RET_NULL_IF(NULL == strokes || NULL == stroke, "Invalid pointer!");
00133     strokes->strokes = g_list_remove(strokes->strokes, stroke);                   
00134     return stroke;
00135 }

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void erscribble_strokes_dump ( ScbStrokesPtr strokes )

Definition at line 279 of file scbstrokes.c.

References _stroke_dump(), and _ScbStrokes::strokes.

Referenced by erscribble_page_dump().

00280 {
00281     if (strokes)
00282     {
00283         g_list_foreach(strokes->strokes, _stroke_dump, 0);
00284     }
00285 }

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void erscribble_strokes_erase_driver_draw ( ScbStrokesPtr strokes )

Definition at line 205 of file scbstrokes.c.

References _ScbStroke::attributes, ERSCRIBBLE_DEV_COLOR_WHITE, erscribble_stroke_driver_draw(), and _ScbStrokes::strokes.

00206 {
00207     if (NULL == strokes)
00208     {
00209         return;
00210     }
00211 
00212     GList *ptr = g_list_first(strokes->strokes);
00213     ScbStrokePtr stroke = NULL;
00214     while (ptr)
00215     {
00216         stroke = (ScbStrokePtr)ptr->data;
00217         if (stroke)
00218         {
00219             ScbDevColor old = stroke->attributes.color;
00220             // use reverse color
00221             // TODO. The WHITE color is not always correct.
00222             // We should the draw the erased part by background color in the future.
00223             stroke->attributes.color = ERSCRIBBLE_DEV_COLOR_WHITE;
00224             erscribble_stroke_driver_draw(stroke);
00225             stroke->attributes.color = old;
00226         }
00227         ptr = g_list_next(ptr);
00228     }
00229 }

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void erscribble_strokes_free ( ScbStrokesPtr strokes )

Definition at line 82 of file scbstrokes.c.

References _stroke_release(), ERSCRIBBLE_RET_IF, and _ScbStrokes::strokes.

Referenced by erscribble_page_clear_strokes(), test::ScribbleMgr::on_erase_begin(), notepad::CNotepadDoc::on_erase_begin(), test::ScribbleMgr::on_erase_end(), notepad::CNotepadDoc::on_erase_end(), test::ScribbleMgr::on_erase_move(), and notepad::CNotepadDoc::on_erase_move().

00083 {
00084     ERSCRIBBLE_RET_IF(NULL == strokes, "Attempt to release NULL pointer!");
00085         
00086     // release all stroke
00087     g_list_foreach(strokes->strokes, _stroke_release, NULL);
00088 
00089     // now the pointers are wild pointers
00090     g_list_free(strokes->strokes);
00091     strokes->strokes = NULL;
00092 }

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int erscribble_strokes_get_count ( const ScbStrokesPtr strokes )

Definition at line 104 of file scbstrokes.c.

References ERSCRIBBLE_INVALID_COUNT, ERSCRIBBLE_RET_INT_IF, and _ScbStrokes::strokes.

Referenced by erscribble_page_get_stroke_count(), and remove_oldest_page_data().

00105 {
00106     ERSCRIBBLE_RET_INT_IF(NULL == strokes, ERSCRIBBLE_INVALID_COUNT, "Invalid strokes pointer!");
00107     
00108     // here, the list contains a empty item, so we need to decrease one
00109     return g_list_length(strokes->strokes);
00110 }

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ScbStrokesPtr erscribble_strokes_line_hit_test	(	ScbStrokesPtr	strokes,
		ScbDevPointPtr	point1,
		ScbDevPointPtr	point2,
		const ScbHitTestCtxPtr	ctx
	)

Definition at line 171 of file scbstrokes.c.

References ERSCRIBBLE_RET_NULL_IF, erscribble_stroke_line_hit_test(), erscribble_strokes_add_stroke(), erscribble_strokes_detach_stroke(), erscribble_strokes_new(), LOGPRINTF, and _ScbStrokes::strokes.

Referenced by erscribble_page_erase_hit_test().

00176 00177 00178 00179 00180 00181 00182     { 00183 00184 00185         { 00186 00187 00188 00189 00190 00191 00192 00193 00194 00195 00196 00197 00198         } 00199 00200     } 00201 00202 }

class="fragment">00175 { ERSCRIBBLE_RET_NULL_IF(NULL == strokes, "Invalid strokes list pointer!"); ScbStrokesPtr result = NULL; ScbStrokePtr stroke = NULL; GList* ptr = g_list_first(strokes->strokes); while(ptr) stroke = (ScbStrokePtr)ptr->data; if (stroke && erscribble_stroke_line_hit_test(stroke, point1, point2, ctx)) LOGPRINTF("line hit"); if (NULL == result) { result = g_new0(ScbStrokes, 1); if (!erscribble_strokes_new(result)) { return NULL; } } // move from one list to the other erscribble_strokes_add_stroke(result, stroke); erscribble_strokes_detach_stroke(strokes, stroke); ptr = g_list_next(ptr); return result;

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gboolean erscribble_strokes_load	(	ScbStrokesPtr	strokes,
		ScbStreamPtr	stream,
		const int	strokes_num
	)

Definition at line 232 of file scbstrokes.c.

References ERSCRIBBLE_RET_FALSE_IF, erscribble_stroke_free(), erscribble_stroke_load(), erscribble_stroke_new(), erscribble_strokes_add_stroke(), and erscribble_strokes_clear().

Referenced by erscribble_page_load().

00233 {
00234     ERSCRIBBLE_RET_FALSE_IF(NULL == strokes || NULL == stream, "Invalid strokes or stream!");
00235 
00236     erscribble_strokes_clear(strokes);
00237 
00238     int i = 0;
00239     for (; i < strokes_num; ++i)
00240     {
00241         ScbStrokePtr stroke = erscribble_stroke_new();
00242         if (erscribble_stroke_load(stroke, stream))
00243         {
00244             erscribble_strokes_add_stroke(strokes, stroke);
00245         }
00246         else
00247         {
00248             erscribble_stroke_free(stroke);
00249             return FALSE;
00250         }
00251     }
00252 
00253     return TRUE;
00254 }

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gboolean erscribble_strokes_new ( ScbStrokesPtr ptr )

Definition at line 74 of file scbstrokes.c.

References ERSCRIBBLE_RET_FALSE_IF, and _ScbStrokes::strokes.

Referenced by erscribble_page_new(), erscribble_strokes_line_hit_test(), and erscribble_strokes_point_hit_test().

00075 {
00076     ERSCRIBBLE_RET_FALSE_IF(NULL == ptr, "Invalid pointer!");
00077     ptr->strokes = 0;
00078     return TRUE;
00079 }

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ScbStrokesPtr erscribble_strokes_point_hit_test	(	ScbStrokesPtr	strokes,
		ScbDevPointPtr	point,
		const ScbHitTestCtxPtr	ctx
	)

Definition at line 138 of file scbstrokes.c.

References ERSCRIBBLE_RET_NULL_IF, erscribble_stroke_point_hit_test(), erscribble_strokes_add_stroke(), erscribble_strokes_detach_stroke(), erscribble_strokes_new(), LOGPRINTF, and _ScbStrokes::strokes.

Referenced by erscribble_page_erase_hit_test().

00141 {
00142     ERSCRIBBLE_RET_NULL_IF(NULL == strokes, "Invalid strokes list pointer!");
00143         
00144     ScbStrokesPtr result = NULL;
00145     ScbStrokePtr stroke  = NULL;
00146     GList* ptr = g_list_first(strokes->strokes);
00147     while(ptr)
00148     {
00149         stroke = (ScbStrokePtr)ptr->data;
00150         if (stroke && erscribble_stroke_point_hit_test(stroke, point, ctx))
00151         {
00152             LOGPRINTF("point hit");
00153             if (NULL == result)
00154             {
00155                 result = g_new0(ScbStrokes, 1);
00156                 if (! erscribble_strokes_new(result))
00157                 {
00158                     return NULL;
00159                 }
00160             }
00161             // move from one stroke list to the other
00162             erscribble_strokes_add_stroke(result, stroke);
00163             erscribble_strokes_detach_stroke(strokes, stroke);
00164         }
00165         ptr = g_list_next(ptr);   
00166     }
00167     return result;
00168 }

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gboolean erscribble_strokes_write_stream	(	ScbStrokesPtr	strokes,
		ScbStreamPtr	stream
	)

Definition at line 257 of file scbstrokes.c.

References ERSCRIBBLE_RET_FALSE_IF, erscribble_stroke_write_stream(), and _ScbStrokes::strokes.

Referenced by erscribble_page_write_stream().

00258 {
00259     ERSCRIBBLE_RET_FALSE_IF(NULL == strokes || NULL == stream, "Invalid strokes or stream!");
00260 
00261     ScbStrokePtr stroke  = NULL;
00262     GList* item = g_list_first(strokes->strokes);
00263     while(item)
00264     {
00265         stroke = (ScbStrokePtr)item->data;
00266         
00267         if (erscribble_stroke_write_stream(stroke, stream) == FALSE)
00268         {
00269             return FALSE;
00270         }
00271 
00272         item = g_list_next(item);   
00273     }
00274 
00275     return TRUE;
00276 }

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scbstrokes.h File Reference

Data Structures

Typedefs

Functions

Typedef Documentation

Function Documentation