diff options
Diffstat (limited to 'FL')
| -rw-r--r-- | FL/Fl_Scroll.H | 36 |
1 files changed, 26 insertions, 10 deletions
diff --git a/FL/Fl_Scroll.H b/FL/Fl_Scroll.H index 4d763faae..ebf7123b8 100644 --- a/FL/Fl_Scroll.H +++ b/FL/Fl_Scroll.H @@ -99,17 +99,33 @@ protected: // NEW (STR#1895) #else private: // OLD #endif - // Structure to manage scrollbar and widget interior sizes. + /** + Structure to manage scrollbar and widget interior sizes. + This is filled out by recalc_scrollbars() for use in calculations + that need to know the visible scroll area size, etc. + \note Availability in FLTK_ABI_VERSION 10303 or higher. + */ typedef struct { - int scrollsize; // the scrollsize (global|local) - int innerbox_x, innerbox_y, innerbox_w, innerbox_h; // widget's inner box (excludes scrollbars) - int innerchild_x, innerchild_y, innerchild_w, innerchild_h; // widget's inner box including scrollbars - int child_l, child_r, child_b, child_t; // child bounding box: left/right/bottom/top - int hneeded, vneeded; // hor + ver scrollbar visibility - int hscroll_x, hscroll_y, hscroll_w, hscroll_h; // hor scrollbar size/position - int vscroll_x, vscroll_y, vscroll_w, vscroll_h; // ver scrollbar size/position - int hpos, hsize, hfirst, htotal; // hor scrollbar values (pos/size/first/total) - int vpos, vsize, vfirst, vtotal; // ver scrollbar values (pos/size/first/total) + /// A local struct to manage a region defined by xywh + typedef struct { int x,y,w,h; } Fl_Region_XYWH; + /// A local struct to manage a region defined by left/right/bottom/top + typedef struct { int l,r,b,t; } Fl_Region_LRBT; + /// A local struct to manage a scrollbar's xywh region and tab values + typedef struct { + int x,y,w,h; + int pos; ///< scrollbar tab's position value + int size; ///< scrollbar tab's size + int first; ///< scrollbar tab's first value + int total; ///< scrollbar tab's total value + } Fl_Scrollbar_Data; + int scrollsize; ///< the effective scrollbar thickness (local or global) + Fl_Region_XYWH innerbox; ///< widget's inner box, excluding scrollbars + Fl_Region_XYWH innerchild; ///< widget's inner box, including scrollbars + Fl_Region_LRBT child; ///< child bounding box: left/right/bottom/top + int hneeded; ///< horizontal scrollbar visibility + int vneeded; ///< vertical scrollbar visibility + Fl_Scrollbar_Data hscroll; ///< horizontal scrollbar region + values + Fl_Scrollbar_Data vscroll; ///< vertical scrollbar region + values } ScrollInfo; void recalc_scrollbars(ScrollInfo &si); |