122 lines
2.9 KiB
C++
122 lines
2.9 KiB
C++
/************************************************************
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trackbar.cpp -
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$Author: lsxi $
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Copyright (C) 2005 Masakazu Yonekura
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************************************************************/
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#include "trackbar.h"
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/*
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* Document-class: OpenCV::GUI::Trackbar
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*
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* Simple Trackbar wedget. OpenCV::GUI::Window can treat trackbar.
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* Trackbar can treat only positive-integer value.
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*/
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__NAMESPACE_BEGIN_OPENCV
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__NAMESPACE_BEGIN_GUI
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__NAMESPACE_BEGIN_TRACKBAR
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VALUE rb_klass;
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VALUE rb_class() {
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return rb_klass;
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}
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void init_ruby_class() {
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if (rb_klass)
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return;
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/*
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* opencv = rb_define_module("OpenCV");
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* GUI = rb_define_module_under(opencv, "GUI");
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*
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* note: this comment is used by rdoc.
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*/
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VALUE GUI = rb_module_GUI();
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rb_klass = rb_define_class_under(GUI, "Trackbar", rb_cObject);
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rb_define_alloc_func(rb_klass, rb_allocate);
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rb_define_method(rb_klass, "initialize", RUBY_METHOD_FUNC(rb_initialize), -1);
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rb_define_method(rb_klass, "name", RUBY_METHOD_FUNC(rb_name), 0);
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rb_define_method(rb_klass, "max", RUBY_METHOD_FUNC(rb_max), 0);
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rb_define_method(rb_klass, "value", RUBY_METHOD_FUNC(rb_value), 0);
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rb_define_method(rb_klass, "value=", RUBY_METHOD_FUNC(rb_set_value), 1);
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}
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VALUE rb_allocate(VALUE klass) {
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Trackbar *ptr;
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return Data_Make_Struct(klass, Trackbar, trackbar_mark, trackbar_free, ptr);
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}
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void trackbar_mark(void *ptr) {
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rb_gc_mark(((Trackbar*)ptr)->block);
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}
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void trackbar_free(void *ptr) {
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Trackbar *trackbar = (Trackbar*)ptr;
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free(trackbar->name);
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free(trackbar);
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}
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/*
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* call-seq:
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* new(<i>name,maxval[,val],&block</i>)
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* new(<i>name,maxval[,val]</i>){|value| ... }
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*
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* Create new Trackbar.
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* <i>name</i> should be String.
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* <i>maxval</i> and <i>val</i> should be Fixnum.
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* When Trackbar adjuster changed, block will be called.
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*/
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VALUE rb_initialize(int argc, VALUE *argv, VALUE self) {
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VALUE name, maxval, val, block;
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rb_scan_args(argc, argv, "21&", &name, &maxval, &val, &block);
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if (NIL_P(block))
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rb_raise(rb_eArgError, "block not given.");
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Check_Type(name, T_STRING);
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Trackbar *trackbar = TRACKBAR(self);
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trackbar->name = strcpy(ALLOC_N(char, RSTRING_LEN(name) + 1), StringValueCStr(name));
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trackbar->maxval = NUM2INT(maxval);
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trackbar->val = IF_INT(val, 0);
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trackbar->block = block;
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return self;
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}
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/*
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* Return trackbar name.
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*/
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VALUE rb_name(VALUE self) {
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return rb_str_new2(TRACKBAR(self)->name);
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}
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/*
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* Return the maximum value that can be taken this trackbar.
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*/
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VALUE rb_max(VALUE self) {
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return INT2NUM(TRACKBAR(self)->maxval);
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}
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/*
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* Return the value of this trackbar.
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*/
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VALUE rb_value(VALUE self) {
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return INT2NUM(TRACKBAR(self)->val);
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}
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/*
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* call-seq:
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* value = <i>val</i>
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*
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* Set trackbar value.
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*/
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VALUE rb_set_value(VALUE self, VALUE val) {
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TRACKBAR(self)->val = NUM2INT(val);
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return self;
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}
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__NAMESPACE_END_TRACKBAR
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__NAMESPACE_END_GUI
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__NAMESPACE_END_OPENCV
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