defs

Data Structures

jdirs

jdirs: Quadruplet with four directions

Fields:

• uint8_t top

• uint8_t right

• uint8_t bottom

• uint8_t left

struct jdirs {
uint8_t top;
  uint8_t right;
  uint8_t bottom;
  uint8_t left;
};

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jrect

jrect: Small rectangle

Fields:

• int16_t x, y

• int16_t w, h

struct jrect {
int16_t x, y;
  int16_t w, h;
};

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Macros

J_CAST0

and accepts from 1 to 4 parameters.

#define J_CAST0(x) _Pragma("GCC error \"J_CAST takes only up to 4 arguments\"")

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J_CAST1

#define J_CAST1(x, ...) jwidget *x = x ## 0; __VA_OPT__(J_CAST0(__VA_ARGS__))

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J_CAST2

#define J_CAST2(x, ...) jwidget *x = x ## 0; __VA_OPT__(J_CAST1(__VA_ARGS__))

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J_CAST3

#define J_CAST3(x, ...) jwidget *x = x ## 0; __VA_OPT__(J_CAST2(__VA_ARGS__))

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J_CAST

#define J_CAST(x, ...) jwidget *x = x ## 0; __VA_OPT__(J_CAST3(__VA_ARGS__))

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Implementation

Implementation is in the gint source tree.