diff options
Diffstat (limited to 'plugins/dragdropselected.lua')
| -rw-r--r-- | plugins/dragdropselected.lua | 96 |
1 files changed, 74 insertions, 22 deletions
diff --git a/plugins/dragdropselected.lua b/plugins/dragdropselected.lua index 4dbaa84..6bdb101 100644 --- a/plugins/dragdropselected.lua +++ b/plugins/dragdropselected.lua @@ -12,6 +12,7 @@ local DocView = require "core.docview" local core = require "core" local keymap = require "core.keymap" +local style = require "core.style" -- helper function for on_mouse_pressed to determine if mouse down is in selection -- iLine is line number where mouse down happened @@ -28,6 +29,13 @@ local function isInSelection(iLine, iCol, iSelLine1, iSelCol1, iSelLine2, iSelCo return true end -- isInSelection +-- distance between two points +local function distance(x1, y1, x2, y2) + return math.sqrt(math.pow(x2-x1, 2)+math.pow(y2-y1, 2)) +end + +local min_drag = style.code_font:get_width(" ") + -- override DocView:on_mouse_moved local on_mouse_moved = DocView.on_mouse_moved function DocView:on_mouse_moved(x, y, ...) @@ -35,29 +43,29 @@ function DocView:on_mouse_moved(x, y, ...) local sCursor = nil -- make sure we only act if previously on_mouse_pressed was in selection - if self.bClickedIntoSelection then + if self.bClickedIntoSelection and + ( -- we are already dragging or we moved enough to start dragging + not self.drag_start_loc or + distance(self.drag_start_loc[1],self.drag_start_loc[2], x, y) > min_drag + ) then + self.drag_start_loc = nil -- show that we are dragging something sCursor = 'hand' - -- check for modifier to duplicate - -- (may want to set a flag as this only needs to be done once) - -- TODO: make image to drag with and/or hand over to OS dnd event - if not keymap.modkeys['ctrl'] then - -- TODO: maybe check if moved at all and only delete then or - -- as some editors do, only when dropped. I do like it going - -- instantly as that reduces the travel-distance. - self.doc:delete_to(0) - --sCursor = 'arrowWithPlus' -- 'handWithPlus' - end - -- calculate line and column for current mouse position local iLine, iCol = self:resolve_screen_position(x, y) - -- move text cursor - self.doc:set_selection(iLine, iCol) + local iSelLine1 = self.dragged_selection[1] + local iSelCol1 = self.dragged_selection[2] + local iSelLine2 = self.dragged_selection[3] + local iSelCol2 = self.dragged_selection[4] + self.doc:set_selection(iSelLine1, iSelCol1, iSelLine2, iSelCol2) + if not isInSelection(iLine, iCol, iSelLine1, iSelCol1, iSelLine2, iSelCol2) then + -- show cursor only if outside selection + self.doc:add_selection(iLine, iCol) + end -- update scroll position self:scroll_to_line(iLine, true) - end -- if previously clicked into selection -- hand off to 'old' on_mouse_moved() @@ -70,7 +78,10 @@ end -- DocView:on_mouse_moved -- override DocView:on_mouse_pressed local on_mouse_pressed = DocView.on_mouse_pressed function DocView:on_mouse_pressed(button, x, y, clicks) - + local caught = DocView.super.on_mouse_pressed(self, button, x, y, clicks) + if caught then + return caught + end -- no need to proceed if not left button or has no selection if ('left' ~= button) or (not self.doc:has_selection()) @@ -85,29 +96,70 @@ function DocView:on_mouse_pressed(button, x, y, clicks) self.bClickedIntoSelection = isInSelection(iLine, iCol, iSelLine1, iSelCol1, iSelLine2, iSelCol2) if self.bClickedIntoSelection then + self.drag_start_loc = { x, y } -- stash selection for inserting later self.sDraggedText = self.doc:get_text(self.doc:get_selection()) + self.dragged_selection = { iSelLine1, iSelCol1, iSelLine2, iSelCol2 } else + self.bClickedIntoSelection = nil + self.dragged_selection = nil -- let 'old' on_mouse_pressed() do whatever it needs to do on_mouse_pressed(self, button, x, y, clicks) end - end -- DocView:on_mouse_pressed -- override DocView:on_mouse_released() local on_mouse_released = DocView.on_mouse_released -function DocView:on_mouse_released(button) - +function DocView:on_mouse_released(button, x, y) + local iLine, iCol = self:resolve_screen_position(x, y) if self.bClickedIntoSelection then - -- insert stashed selected text at current position - self.doc:text_input(self.sDraggedText) + local iSelLine1, iSelCol1, iSelLine2, iSelCol2 = table.unpack(self.dragged_selection) + if not self.drag_start_loc + and not isInSelection(iLine, iCol, iSelLine1, iSelCol1, iSelLine2, iSelCol2) then + -- insert stashed selected text at current position + if iLine < iSelLine1 or (iLine == iSelLine1 and iCol < iSelCol1) then + -- delete first + self.doc:set_selection(iSelLine1, iSelCol1, iSelLine2, iSelCol2) + if not keymap.modkeys['ctrl'] then + self.doc:delete_to(0) + end + self.doc:set_selection(iLine, iCol) + self.doc:text_input(self.sDraggedText) + else + -- insert first + self.doc:set_selection(iLine, iCol) + self.doc:text_input(self.sDraggedText) + self.doc:set_selection(iSelLine1, iSelCol1, iSelLine2, iSelCol2) + if not keymap.modkeys['ctrl'] then + self.doc:delete_to(0) + end + self.doc:set_selection(iLine, iCol) + end + elseif self.drag_start_loc then + -- deselect only if the drag never happened + self.doc:set_selection(iLine, iCol) + end -- unset stash and flag(s) TODO: self.sDraggedText = '' self.bClickedIntoSelection = nil end -- hand over to old handler - on_mouse_released(self, button) + on_mouse_released(self, button, x, y) end -- DocView:on_mouse_released +-- override DocView:draw_caret() +local draw_caret = DocView.draw_caret +function DocView:draw_caret(x, y) + if self.bClickedIntoSelection then + local iLine, iCol = self:resolve_screen_position(x, y) + -- don't show carets inside selections + if isInSelection(iLine, iCol, + self.dragged_selection[1], self.dragged_selection[2], + self.dragged_selection[3], self.dragged_selection[4]) then + return + end + end + draw_caret(self, x, y) +end -- DocView:draw_caret() |