jlayout

Functions

jlayout_set_manual

Remove a layout from a widget This function removes the current layout of the widget.

void jlayout_set_manual(void *w);

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*jlayout_get_hbox

Spacing between elements

jlayout_box *jlayout_get_hbox(void *w);

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*jlayout_get_hbox

jlayout_get_hbox(), jlayout_get_vbox(): Get configuration for box layouts These functions return the jlayout_box parameters for widgets that have a box layout, and NULL otherwise.

jlayout_box *jlayout_get_hbox(void *w);

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*jlayout_set_hbox

jlayout_set_hbox(), jlayout_set_vbox(): Create box layouts These functions configure the specified widget to have a box layout, and return the jlayout_box parameters to configure that layout. The parameters are initialized even if the widget previously had a box layout.

jlayout_box *jlayout_set_hbox(void *w);

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*jlayout_get_stack

Index of currently-visible child

jlayout_stack *jlayout_get_stack(void *w);

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*jlayout_get_stack

Get configuration for stack layouts For widgets that have a stack layout, returns a pointer to the parameters. Otherwise, returns NULL.

jlayout_stack *jlayout_get_stack(void *w);

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*jlayout_set_stack

Create stack layouts Configure the specified widget to have a stack layout and return the new parameters. The new layout is cleared even if the widget previously had a stack layout.

jlayout_stack *jlayout_set_stack(void *w);

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Data Structures

jlayout_type

jlayout_type: Built-in layout mechanisms

Fields:

• /* User or sub-class places children manually */ J_LAYOUT_NONE = 0, /* Children are laid out in a vertical box

• spacing applies. Extra space is redistributed proportionally to the stretch attribute. */ J_LAYOUT_VBOX, /* Same as J_LAYOUT_VBOX, but horizontally. */ J_LAYOUT_HBOX, /* Children are stacked, only one is visible at a time. */ J_LAYOUT_STACK, /* Children are laid out in a grid

• spacing applies. */ J_LAYOUT_GRID,

enum jlayout_type {
/* User or sub-class places children manually */
  J_LAYOUT_NONE = 0,
  /* Children are laid out in a vertical box; spacing applies. Extra
     space is redistributed proportionally to the stretch attribute. */
  J_LAYOUT_VBOX,
  /* Same as J_LAYOUT_VBOX, but horizontally. */
  J_LAYOUT_HBOX,
  /* Children are stacked, only one is visible at a time. */
  J_LAYOUT_STACK,
  /* Children are laid out in a grid; spacing applies. */
  J_LAYOUT_GRID,
};

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jlayout_box

jlayout_set_manual(): Remove a layout from a widget This function removes the current layout of the widget. */ void jlayout_set_manual(void *w);

//--- // Box layout //---

/* jlayout_box: Parameters for VBOX and HBOX layouts

Fields:

• /* Spacing between elements */ uint8_t spacing

• uint :24

struct jlayout_box {
/* Spacing between elements */
  uint8_t spacing;
  uint :24;
};

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jlayout_stack

jlayout_get_hbox(), jlayout_get_vbox(): Get configuration for box layouts These functions return the jlayout_box parameters for widgets that have a box layout, and NULL otherwise. */ jlayout_box *jlayout_get_hbox(void *w); jlayout_box *jlayout_get_vbox(void *w);

/* jlayout_set_hbox(), jlayout_set_vbox(): Create box layouts These functions configure the specified widget to have a box layout, and return the jlayout_box parameters to configure that layout. The parameters are initialized even if the widget previously had a box layout. */ jlayout_box *jlayout_set_hbox(void *w); jlayout_box *jlayout_set_vbox(void *w);

//--- // Stack layouts //---

/* jlayout_stack: Parameters for STACK layouts

Fields:

• /* Index of currently-visible child */ int8_t active

• uint :24

struct jlayout_stack {
/* Index of currently-visible child */
  int8_t active;
  uint :24;
};

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Implementation

Implementation is in the gint source tree.