113 lines
4.2 KiB
Plaintext
113 lines
4.2 KiB
Plaintext
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This is a list of things to check when testing window size/pos functions.
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===
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gtk_widget_set_size_request():
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- causes the widget to request the given size
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- for toplevel windows, changes the default-requested size if
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no default size is set and gtk_window_resize() has not been called
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- passing -1 for either width or height reverts to "natural" request
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in that dimension
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- passing 0 is allowed, and results in requisition of 1x1
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(0x0 is a permitted requisition, but equivalent to 1x1,
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we use 1x1 for implementation convenience)
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- causes notifies on width_request, height_request properties
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gtk_window_set_default_size():
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- has no effect after the window has been mapped the first time,
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unless the window has been unrealized in which case it should
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have an effect
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- allows size of 0, equivalent to 1
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- allows size of -1 to unset the default size
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- clamped to geometry hints
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- causes notifies on default_width, default_height properties
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gtk_window_get_default_size():
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- returns the values last passed to set_default_size(), including
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-1. If set_default_size() has not been called, returns -1.
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gtk_window_move():
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- always causes a configure request if the window is mapped,
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unless the last configure request we sent was for the same
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position being moved to
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- position may be negative to move windows offscreen
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- if GTK_WIN_POS_CENTER_ALWAYS (or other future position
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constraints we may add) is in effect, the move
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request is clamped to obey the constraints. thus
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calling gtk_window_move() on a CENTER_ALWAYS window
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may trigger the window to bounce back to center if it
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wasn't there
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- overrides all GTK_WIN_POS_ except CENTER_ALWAYS
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gtk_window_get_size():
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- obtains the client-side known size of widget->window,
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as last received from a configure event
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- prior to mapping, returns the default size we will request
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- between realization and mapping, computes default size
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rather than looking at widget->window up-to-date size,
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so the size will be correct after force-realizing a window
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gtk_window_get_position():
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- obtains the point to be passed to gtk_window_move() in order
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to keep the window in its current position
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- round-trips to the server to get the position; this is suboptimal
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from both a race condition and speed standpoint but required to get
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window frame size
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- if the window is unmapped, returns the default position we will
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request
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gtk_window_set_position():
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- not the inverse of get_position(), sadly
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- modifies the default positioning of the window
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- if set to CENTER_ALWAYS and the window is mapped, results in a
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configure request moving the window to the center, unless the
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window was already centered
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- ignored if gtk_window_move() called, with the exception
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of CENTER_ALWAYS
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gtk_window_parse_geometry():
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- parses a standard X geometry string
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- toggles on one or both of GDK_HINT_USER_SIZE, GDK_HINT_USER_POS
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- "xprop" shows user size/position are set on the window
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- calls gtk_window_set_default_size() to set the window size
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- calls gtk_window_move() to set the window position
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- calls gtk_window_set_gravity() to set the window gravity
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gtk_window_reshow_with_initial_size():
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- for use by GUI builders; unrealizes and re-shows the window,
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using default size (and also position, but position
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is reset on any hide anyway)
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- window should be positioned and sized as it was on initial map,
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barring odd window managers
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gtk_window_set_geometry_hints():
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- if a hint is set with this function, we do not override it
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in other parts of the code
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General behavior
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===
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- no infinite loops or nasty fighting-the-user flicker during
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operations such as moving/resizing a window
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Properties
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===
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GtkWindow::default_width, GtkWindow::default_height:
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- default_width is -1 if unset, or >= 0 if
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a default width is set
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- default_height is -1 if unset, or >= 0 if
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a default height is set
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GtkWindow::resizable:
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- if FALSE, we set the min size to the max size in the geometry
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hints.
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- If the app programmer has called gtk_window_set_geometry_hints()
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however and set min or max size, we don't replace the hint they
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set.
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GtkWidget::width_request, GtkWidget::height_request:
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- if -1, default requisition of widget is used
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- otherwise, override default requisition
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