diff options
Diffstat (limited to 'src/misc_gui.cpp')
| -rw-r--r-- | src/misc_gui.cpp | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/misc_gui.cpp b/src/misc_gui.cpp index b309693bf..d771f92ee 100644 --- a/src/misc_gui.cpp +++ b/src/misc_gui.cpp @@ -854,6 +854,39 @@ Rect QueryString::GetBoundingRect(const Window *w, int wid, const char *from, co return r; } +/** + * Get the character that is rendered at a position. + * @param w Window the edit box is in. + * @param wid Widget index. + * @param pt Position to test. + * @return Pointer to the character at the position or NULL if no character is at the position. + */ +const char *QueryString::GetCharAtPosition(const Window *w, int wid, const Point &pt) const +{ + const NWidgetLeaf *wi = w->GetWidget<NWidgetLeaf>(wid); + + assert((wi->type & WWT_MASK) == WWT_EDITBOX); + + bool rtl = _current_text_dir == TD_RTL; + Dimension sprite_size = GetSpriteSize(rtl ? SPR_IMG_DELETE_RIGHT : SPR_IMG_DELETE_LEFT); + int clearbtn_width = sprite_size.width + WD_IMGBTN_LEFT + WD_IMGBTN_RIGHT; + + int left = wi->pos_x + (rtl ? clearbtn_width : 0); + int right = wi->pos_x + (rtl ? wi->current_x : wi->current_x - clearbtn_width) - 1; + + int top = wi->pos_y + WD_FRAMERECT_TOP; + int bottom = wi->pos_y + wi->current_y - 1 - WD_FRAMERECT_BOTTOM; + + if (!IsInsideMM(pt.y, top, bottom)) return NULL; + + /* Clamp caret position to be inside our current width. */ + const Textbuf *tb = &this->text; + int delta = min(0, (right - left) - tb->pixels - 10); + if (tb->caretxoffs + delta < 0) delta = -tb->caretxoffs; + + return ::GetCharAtPosition(tb->buf, pt.x - delta - left); +} + void QueryString::ClickEditBox(Window *w, Point pt, int wid, int click_count, bool focus_changed) { const NWidgetLeaf *wi = w->GetWidget<NWidgetLeaf>(wid); |