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Kernel+LibVT: Implement left-right scrolling
This commit implements the left/right scrolling used in the `ICH`/`DCH` escape sequences for `VirtualConsole`. This brings us one step closer to VT420/xterm compatibility. We can now finally remove the last escape sequence related `ifdef`s.
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parent
7419569a2b
commit
89843cd692
4 changed files with 68 additions and 43 deletions
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@ -39,11 +39,10 @@ private:
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virtual void scroll_up(u16 region_top, u16 region_bottom, size_t count) override;
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virtual void scroll_down(u16 region_top, u16 region_bottom, size_t count) override;
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virtual void scroll_left(u16 row, u16 column, size_t count) override;
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virtual void scroll_right(u16 row, u16 column, size_t count) override;
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virtual void put_character_at(unsigned row, unsigned column, u32 ch) override;
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virtual void clear_in_line(u16 row, u16 first_column, u16 last_column) override;
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virtual void ICH(Parameters) override;
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virtual void DCH(Parameters) override;
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};
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class VirtualConsole final : public TTY
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@ -138,6 +137,8 @@ private:
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void scroll_down(u16 region_top, u16 region_bottom, size_t count);
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void scroll_up(u16 region_top, u16 region_bottom, size_t count);
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void scroll_left(u16 row, u16 column, size_t count);
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void scroll_right(u16 row, u16 column, size_t count);
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void clear_line(size_t index)
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{
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clear_in_line(index, 0, m_console_impl.columns() - 1);
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