liberscribble/include/scbmacro.h Source File

00001 /*
00002  * This file is part of liberscribble.
00003  *
00004  * liberscribble is free software: you can redistribute it and/or modify
00005  * it under the terms of the GNU General Public License as published by
00006  * the Free Software Foundation, either version 2 of the License, or
00007  * (at your option) any later version.
00008  *
00009  * liberscribble is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
00012  * GNU General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program. If not, see <http://www.gnu.org/licenses/>.
00016  */
00017 
00023 #ifndef SCBMACRO_H_
00024 #define SCBMACRO_H_
00025 
00027 // scribble library macro 
00028 // In this file, we will define some macroes, so that callers can reuse 
00029 // them in their application.
00030 // The reason of using macro instead of function is that
00031 // we do not want to bind to specified gui library, such as gtk or X11
00033 
00034 
00035 #ifdef __cplusplus
00036 extern "C"
00037 {
00038 #endif
00039 
00041 // using gtk to draw page
00042 // all the parameters are pointers
00043 #define SCB_GTK_DRAW_PAGE(doc, pageId, drawable, gc)\
00044 {\
00045     if (doc)\
00046     {\
00047         ScbPagePtr SCB_page = scb_doc_get_page(doc, pageId);\
00048         if (SCB_page)\
00049         {\
00050             ScbStrokesPtr SCB_strokes = scb_page_get_strokes(SCB_page);\
00051             if (SCB_strokes)\
00052             {\
00053                 ScbStrokePtr SCB_stroke = NULL;\
00054                 GdkColor GDK_color;\
00055                 ScbColor SCB_color;\
00056                 GdkLineStyle GDK_lineStyle = GDK_LINE_SOLID; \
00057                 GList *SCB_ptr = g_list_first(SCB_strokes->strokes);\
00058                 while (SCB_ptr)\
00059                 {\
00060                     SCB_stroke = (ScbStrokePtr)SCB_ptr->data;\
00061                     if (SCB_stroke)\
00062                     {\
00063                         scb_dev_color_to_color(&SCB_color, SCB_stroke->style.color);\
00064                         GDK_color.pixel = SCB_color.pixel;\
00065                         GDK_color.red = SCB_color.red;\
00066                         GDK_color.green = SCB_color.green;\
00067                         GDK_color.blue = SCB_color.blue;\
00068                         gdk_gc_set_rgb_fg_color(gc, &GDK_color);\
00069                         gdk_gc_set_line_attributes (gc, \
00070                             SCB_stroke->style.penSize, \
00071                             GDK_lineStyle, \
00072                             GDK_CAP_PROJECTING, \
00073                             GDK_JOIN_MITER);\
00074                         gdk_draw_lines(drawable, \
00075                             gc, \
00076                             (GdkPoint *)scb_stroke_get_point_data(SCB_stroke), \
00077                             scb_stroke_get_point_count(SCB_stroke));\
00078                     }\
00079                     SCB_ptr = g_list_next(SCB_ptr);\
00080                 }\
00081             }\
00082         }\
00083     }\
00084 }
00085 
00086 
00088 // macro for toolbar
00090 
00091 // ScbDocPtr doc 
00092 // erClientChannel_t channel
00093 // int/enum appId
00094 #define SCB_TOOLBAR_INIT(doc, channel, id)\
00095 {\
00096     doc->context.appId = id;\
00097     SCB_TOOLBAR_UPDATE(doc, channel);\
00098 }
00099 
00100 #define SCB_TOOLBAR_MAP(doc, s, i)\
00101 {\
00102     ScbTBSItem item;\
00103     item.state  = s;\
00104     item.iconId = i;\
00105     scb_doc_add_map_item(doc, &item);\
00106 }
00107 
00108 #define SCB_TOOLBAR_UPDATE(doc, channel)\
00109 {\
00110     tbRemovePlatformIcon(channel, doc->context.appId, iconID_pen);\
00111     tbRemovePlatformIcon(channel, doc->context.appId, iconID_pen1pixel);\
00112     tbRemovePlatformIcon(channel, doc->context.appId, iconID_pen3pixel);\
00113     tbRemovePlatformIcon(channel, doc->context.appId, iconID_pen5pixel);\
00114     tbRemovePlatformIcon(channel, doc->context.appId, iconID_pen7pixel);\
00115     tbRemovePlatformIcon(channel, doc->context.appId, iconID_pencolorbl);\
00116     tbRemovePlatformIcon(channel, doc->context.appId, iconID_pencolordg);\
00117     tbRemovePlatformIcon(channel, doc->context.appId, iconID_pencolorlg);\
00118     tbRemovePlatformIcon(channel, doc->context.appId, iconID_pencolorwh);\
00119     tbRemovePlatformIcon(channel, doc->context.appId, iconID_eraseline);\
00120     int __tbi;\
00121     ScbTBSItemPtr __tbitem = (ScbTBSItemPtr)doc->context.table->data;\
00122     for(__tbi = 0; __tbi < doc->context.table->len; ++__tbi)\
00123     {\
00124         if (SCB_TBS_SCRIBBLE == __tbitem->state)\
00125         {\
00126             tbAppendPlatformIcon(channel, doc->context.appId, __tbitem->iconId, ccVwrToolbar);\
00127         }\
00128         ++__tbitem;\
00129     }\
00130     if (SCB_TBS_SCRIBBLE == doc->context.curState)\
00131     {\
00132         tbSetStatePlatformIcon(channel, doc->context.appId, iconID_pen, iconState_selected);\
00133     }\
00134     int __tbIconIndex = (int)iconID_pen1pixel + doc->context.curStrokeStyle.penSize/2;\
00135     __tbitem = (ScbTBSItemPtr)doc->context.table->data;\
00136     if (SCB_TBS_SELECT_PEN_SIZE == doc->context.curState)\
00137     {\
00138         for(__tbi = 0; __tbi < doc->context.table->len; ++__tbi)\
00139         {\
00140             if (SCB_TBS_SELECT_PEN_SIZE == __tbitem->state)\
00141             {\
00142                 tbAppendPlatformIcon(channel, doc->context.appId, __tbitem->iconId, ccVwrToolbar);\
00143             }\
00144             ++__tbitem;\
00145         }\
00146         tbSetStatePlatformIcon(channel, doc->context.appId, __tbIconIndex, iconState_selected);\
00147     }\
00148     else\
00149     {\
00150         for(__tbi = 0; __tbi < doc->context.table->len; ++__tbi)\
00151         {\
00152             if (__tbIconIndex == __tbitem->iconId)\
00153             {\
00154                 tbAppendPlatformIcon(channel, doc->context.appId, __tbitem->iconId, ccVwrToolbar);\
00155                 break;\
00156             }\
00157             ++__tbitem;\
00158         }\
00159     }\
00160     __tbIconIndex = (int)iconID_pencolorbl + (int)SCB_DEV_COLOR_BLACK - (int)doc->context.curStrokeStyle.color;\
00161     __tbitem = (ScbTBSItemPtr)doc->context.table->data;\
00162     if (SCB_TBS_SELECT_LINE_COLOR == doc->context.curState)\
00163     {\
00164         for(__tbi = 0; __tbi < doc->context.table->len; ++__tbi)\
00165         {\
00166             if (SCB_TBS_SELECT_LINE_COLOR == __tbitem->state)\
00167             {\
00168                 tbAppendPlatformIcon(channel, doc->context.appId, __tbitem->iconId, ccVwrToolbar);\
00169             }\
00170             ++__tbitem;\
00171         }\
00172         tbSetStatePlatformIcon(channel, doc->context.appId, __tbIconIndex, iconState_selected);\
00173     }\
00174     else\
00175     {\
00176         for(__tbi = 0; __tbi < doc->context.table->len; ++__tbi)\
00177         {\
00178             if (__tbIconIndex == __tbitem->iconId)\
00179             {\
00180                 tbAppendPlatformIcon(channel, doc->context.appId, __tbitem->iconId, ccVwrToolbar);\
00181                 break;\
00182             }\
00183             ++__tbitem;\
00184         }\
00185     }\
00186     __tbitem = (ScbTBSItemPtr)doc->context.table->data;\
00187     for(__tbi = 0; __tbi < doc->context.table->len; ++__tbi)\
00188     {\
00189         if (SCB_TBS_ERASE == __tbitem->state)\
00190         {\
00191             tbAppendPlatformIcon(channel, doc->context.appId, __tbitem->iconId, ccVwrToolbar);\
00192         }\
00193         ++__tbitem;\
00194     }\
00195     if (SCB_TBS_ERASE == doc->context.curState)\
00196     {\
00197         tbSetStatePlatformIcon(channel, doc->context.appId, iconID_eraseline, iconState_selected);\
00198     }\
00199 }
00200 
00202 // take action when current state is scribble
00203 // action: !scribble
00204 // shrink all icons
00205 // set icon(only scribble) state to selected
00207 #define SCB_ACTION_SCRIBBLE(doc, channel, iconId)\
00208 {\
00209     if (SCB_TBS_SCRIBBLE == doc->context.curState)\
00210     {\
00211         doc->context.curState = SCB_TBS_NONE;\
00212     }\
00213     else\
00214     {\
00215         doc->context.curState = SCB_TBS_SCRIBBLE;\
00216     }\
00217     SCB_TOOLBAR_UPDATE(doc, channel)\
00218 }
00219 
00221 // take action when current state is selecting pen size
00223 #define SCB_ACTION_SELECT_PEN_SIZE(doc, channel, iconId)\
00224 {\
00225     if (SCB_TBS_SELECT_PEN_SIZE != doc->context.curState)\
00226     {\
00227         doc->context.curState = SCB_TBS_SELECT_PEN_SIZE;\
00228     }\
00229     else\
00230     {\
00231         doc->context.curState = SCB_TBS_SCRIBBLE;\
00232         doc->context.curStrokeStyle.penSize = ((int)iconId - (int)iconID_pen1pixel) * 2 + 1;\
00233     }\
00234     SCB_TOOLBAR_UPDATE(doc, channel)\
00235 }    
00236 
00238 // take action when current state is selecting line color
00240 #define SCB_ACTION_SELECT_LINE_COLOR(doc, channel, iconId)\
00241 {\
00242     if (SCB_TBS_SELECT_LINE_COLOR != doc->context.curState)\
00243     {\
00244         doc->context.curState = SCB_TBS_SELECT_LINE_COLOR;\
00245     }\
00246     else\
00247     {\
00248         doc->context.curState = SCB_TBS_SCRIBBLE;\
00249         doc->context.curStrokeStyle.color = SCB_DEV_COLOR_BLACK - ((int)iconId - (int)iconID_pencolorbl);\
00250     }\
00251     SCB_TOOLBAR_UPDATE(doc, channel)\
00252 }
00253 
00255 // take action when current state is erasing
00257 #define SCB_ACTION_ERASE(doc, channel, iconId)\
00258 {\
00259     if (SCB_TBS_ERASE != doc->context.curState)\
00260     {\
00261         doc->context.curState = SCB_TBS_ERASE;\
00262     }\
00263     else\
00264     {\
00265         doc->context.curState = SCB_TBS_SCRIBBLE;\
00266     }\
00267     SCB_TOOLBAR_UPDATE(doc, channel)\
00268 }
00269 
00271 // receive command and change state according to current state and input state
00273 #define SCB_TOOLBAR_ON_RECEIVE_MSG(doc, channel, iconId)\
00274 {\
00275     if (iconID_pen == iconId)\
00276     {\
00277         SCB_ACTION_SCRIBBLE(doc, channel, iconId);\
00278     }\
00279     else if ((int)iconID_pen1pixel <= iconId && (int)iconID_pen7pixel >= iconId)\
00280     {\
00281         SCB_ACTION_SELECT_PEN_SIZE(doc, channel, iconId);\
00282     }\
00283     else if ((int)iconID_pencolorbl <= iconId && (int)iconID_pencolorwh >= iconId)\
00284     {\
00285         SCB_ACTION_SELECT_LINE_COLOR(doc, channel, iconId);\
00286     }\
00287     else if (iconID_eraseline == iconId)\
00288     {\
00289         SCB_ACTION_ERASE(doc, channel, iconId);\
00290     }\
00291 }
00292 
00293 
00294 #ifdef __cplusplus
00295 }
00296 #endif
00297 
00298 #endif