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add a new class intermediary for scrolling content

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This commit is contained in:
Jinhao 2017-01-13 05:57:10 +08:00
parent c35eb87e0d
commit 923c0c8784
2 changed files with 650 additions and 581 deletions
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12
include/nana/gui/widgets/listbox.hpp
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@ -1,7 +1,7 @@
/**
* A List Box Implementation
* Nana C++ Library(http://www.nanapro.org)
* Copyright(C) 2003-2016 Jinhao(cnjinhao@hotmail.com)
* Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
*
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or copy at
@ -175,7 +175,6 @@ namespace nana
cell(cell&&) noexcept;
cell(::std::string) noexcept;
cell(::std::string, const format&);
//cell(::std::string, const ::nana::color& bgcolor, const ::nana::color& fgcolor); //deprecated
cell& operator=(const cell&);
cell& operator=(cell&&) noexcept;
@ -328,7 +327,7 @@ namespace nana
}
private:
void clear() override
void clear() noexcept override
{
container_.clear();
}
@ -781,8 +780,6 @@ namespace nana
trigger();
~trigger();
essence& ess() const noexcept;
private:
void _m_draw_border();
private:
void attached(widget_reference, graph_reference) override;
void detached() override;
@ -792,7 +789,6 @@ namespace nana
void mouse_leave(graph_reference, const arg_mouse&) override;
void mouse_down(graph_reference, const arg_mouse&) override;
void mouse_up(graph_reference, const arg_mouse&) override;
void mouse_wheel(graph_reference, const arg_wheel&) override;
void dbl_click(graph_reference, const arg_mouse&) override;
void resized(graph_reference, const arg_resized&) override;
void key_press(graph_reference, const arg_keyboard&) override;
@ -809,8 +805,7 @@ namespace nana
: public std::iterator<std::input_iterator_tag, item_proxy>
{
public:
item_proxy(essence*) noexcept;
item_proxy(essence*, const index_pair&);
item_proxy(essence*, const index_pair& = index_pair{});
/// the main porpose of this it to make obvious that item_proxy operate with absolute positions, and dont get moved during sort()
static item_proxy from_display(essence *, const index_pair &relative) ;
@ -1192,7 +1187,6 @@ namespace nana
unsigned suspension_width { 8 }; ///< def= . the trigger will set this to the width if ("...")
unsigned text_margin { 5 }; ///< def= 5. Additional or extended with added (before) to the text width to determine the cell width. cell_w = text_w + ext_w +1
unsigned header_height { 25 }; ///< def=25 . header height header_size
unsigned text_height { 14 }; ///< the trigger will set this to the height of the text font
unsigned item_height_ex { 6 }; ///< Set !=0 !!!! def=6. item_height = text_height + item_height_ex
unsigned header_splitter_area_before{ 2 }; ///< def=2. But 4 is better... IMO
unsigned header_splitter_area_after { 3 }; ///< def=3. But 4 is better...

1199
source/gui/widgets/listbox.cpp
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