Make a backup of the area an overlay will occupy and restore it afterwards
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parent
89f0c26484
commit
1f64677fcf
21
tui.cpp
21
tui.cpp
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@ -124,6 +124,24 @@ static void resolve_align(const Align align, const int width, const int height,
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y = ymax - height;
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y = ymax - height;
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}
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}
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class surface_backup
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{
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int x, y;
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int w, h;
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termpaint_surface *backup;
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public:
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surface_backup(int x, int y, int w, int h): x(x), y(y), w(w), h(h), backup(termpaint_surface_new_surface(surface, w, h))
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{
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termpaint_surface_copy_rect(surface, x, y, w, h, backup, 0, 0, TERMPAINT_COPY_NO_TILE, TERMPAINT_COPY_NO_TILE);
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}
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~surface_backup()
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{
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termpaint_surface_copy_rect(backup, 0, 0, w, h, surface, x, y, TERMPAINT_COPY_NO_TILE, TERMPAINT_COPY_NO_TILE);
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termpaint_surface_free(backup);
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}
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};
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static void draw_box_with_caption(int x, int y, int w, int h, const std::string &caption=std::string())
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static void draw_box_with_caption(int x, int y, int w, int h, const std::string &caption=std::string())
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{
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{
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termpaint_surface_clear_rect(surface, x, y, w, h, TERMPAINT_DEFAULT_COLOR, TERMPAINT_DEFAULT_COLOR);
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termpaint_surface_clear_rect(surface, x, y, w, h, TERMPAINT_DEFAULT_COLOR, TERMPAINT_DEFAULT_COLOR);
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@ -172,6 +190,7 @@ int get_selection(const std::string &caption, const std::vector<std::string> &en
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int x, y;
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int x, y;
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resolve_align(align, cols_needed, rows_needed, 0, cols, 0, rows, x, y);
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resolve_align(align, cols_needed, rows_needed, 0, cols, 0, rows, x, y);
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surface_backup backup(x, y, cols_needed, rows_needed);
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draw_box_with_caption(x, y, cols_needed, rows_needed, caption);
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draw_box_with_caption(x, y, cols_needed, rows_needed, caption);
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int yy = y+1;
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int yy = y+1;
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@ -230,6 +249,7 @@ std::string get_string(const std::string &caption, const std::string &text, cons
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int x, y;
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int x, y;
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resolve_align(align, cols_needed, rows_needed, 0, cols, 0, rows, x, y);
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resolve_align(align, cols_needed, rows_needed, 0, cols, 0, rows, x, y);
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surface_backup backup(x, y, cols_needed, rows_needed);
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const int input_row = y + 1 + !text.empty();
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const int input_row = y + 1 + !text.empty();
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@ -373,6 +393,7 @@ Button message_box(const std::string &caption, const std::string &text, const Bu
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const size_t rows = termpaint_surface_height(surface);
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const size_t rows = termpaint_surface_height(surface);
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int x, y;
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int x, y;
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resolve_align(align, cols_needed, rows_needed, 0, cols, 0, rows, x, y);
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resolve_align(align, cols_needed, rows_needed, 0, cols, 0, rows, x, y);
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surface_backup backup(x, y, cols_needed, rows_needed);
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draw_box_with_caption(x, y, cols_needed, rows_needed, caption);
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draw_box_with_caption(x, y, cols_needed, rows_needed, caption);
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