code_twain/sane/DlgPage.cpp

// DlgIndicator.cpp: 实现文件
//

#include "DlgPage.h"
#include "resource.h"
#include "scanned_img.h"	// for local_trans

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// dlg_base 对话框
extern HMODULE	g_my_inst;

std::wstring dlg_base::prop_name = L"dlg_base_object_prop_name";

dlg_base::dlg_base(HWND parent, UINT idd) : parent_(parent), hwnd_(NULL), idd_(idd)
{
}
dlg_base::~dlg_base()
{
	if(IsWindow(hwnd_))
		DestroyWindow(hwnd_);
}

BOOL CALLBACK dlg_base::dlg_proc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
{
	if (msg == WM_INITDIALOG)
	{
		dlg_base* obj = (dlg_base*)lp;

		SetPropW(hwnd, dlg_base::prop_name.c_str(), (HANDLE)obj);
		obj->hwnd_ = hwnd;
	}

	dlg_base	*obj = (dlg_base*)GetPropW(hwnd, dlg_base::prop_name.c_str());
	BOOL		ret = FALSE;

	if (obj)
		ret = obj->handle_message(msg, wp, lp);

	return ret;
}

bool dlg_base::get_max_size(SIZE& dst, const SIZE& src)
{
	bool changed = false;

	if (dst.cx < src.cx)
	{
		dst.cx = src.cx;
		changed = true;
	}
	if (dst.cy < src.cy)
	{
		dst.cy = src.cy;
		changed = true;
	}

	return changed;
}
bool dlg_base::get_max_size(SIZE& dst, int cx, int cy)
{
	bool changed = false;

	if (dst.cx < cx)
	{
		dst.cx = cx;
		changed = true;
	}
	if (dst.cy < cy)
	{
		dst.cy = cy;
		changed = true;
	}

	return changed;
}

BOOL dlg_base::handle_message(UINT msg, WPARAM wp, LPARAM lp)
{
	return FALSE;
}
void dlg_base::on_font_changed(void)
{

}
void dlg_base::create(void)
{
	hwnd_ = CreateDialogParamW(g_my_inst, MAKEINTRESOURCE(idd_), parent_, &dlg_base::dlg_proc, (LPARAM)this);
}

HWND dlg_base::hwnd(void)
{
	return hwnd_;
}
void dlg_base::screen_2_client(LPRECT r)
{
	POINT	pt = { r->left, r->top };

	ScreenToClient(hwnd_, &pt);
	OffsetRect(r, pt.x - r->left, pt.y - r->top);
}
void dlg_base::client_2_screen(LPRECT r)
{
	POINT	pt = { r->left, r->top };

	ClientToScreen(hwnd_, &pt);
	OffsetRect(r, pt.x - r->left, pt.y - r->top);
}
HWND dlg_base::get_item(UINT id)
{
	return GetDlgItem(hwnd_, id);
}
BOOL dlg_base::set_font(HFONT font)
{
	BOOL ret = SendMessage(hwnd_, WM_SETFONT, (WPARAM)font, 1) == 0;

	if (ret)
		on_font_changed();

	return ret;
}
HFONT dlg_base::get_font(void)
{
	return (HFONT)SendMessage(hwnd_, WM_GETFONT, 0, 0);
}


/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// dlg_page 对话框
UINT	dlg_page::dyn_id_base = 3000;
int		dlg_page::gap_x = 20;
int		dlg_page::gap_y = 12;

dlg_page::dlg_page(HWND parent, const wchar_t* name) : dlg_base(parent, IDD_PAGE), name_(name ? name : L""), ctrl_id_(0)
{
	size_.cx = size_.cy = 0;
	create();
	refresh_font();
}
dlg_page::~dlg_page()
{}

BOOL dlg_page::handle_message(UINT msg, WPARAM wp, LPARAM lp)
{
	return FALSE;
}
void dlg_page::on_font_changed(void)
{
	refresh_font();
}
void dlg_page::refresh_font(void)
{
	HFONT		font = get_font();
	LOGFONTW	lf = { 0 };

	GetObjectW(font, sizeof(lf), &lf);
	font_size_.cx = lf.lfWidth;
	font_size_.cy = lf.lfHeight < 0 ? -lf.lfHeight : lf.lfHeight;
}
bool dlg_page::create_control_bool(int sn, const SANE_Option_Descriptor* desc, void* cur_val)
{
	std::wstring	title(local_trans::a2u(desc->title, CP_UTF8));
	bool	ret = true;
	bool	now = *(SANE_Bool*)cur_val == SANE_TRUE ? true : false;
	int		w = title.length() * font_size_.cx + 18,
			h = font_size_.cy;
	HWND	wnd = CreateWindowW(L"Button", L"check", WS_CHILD | WS_VISIBLE | WS_MAXIMIZEBOX, pos_.x, pos_.y, w, h, hwnd(), NULL, g_my_inst, NULL);
	
	pos_.y += h + dlg_page::gap_y;
	if (size_.cx < w)
		size_.cx = w;
	if (size_.cy < pos_.y)
		size_.cy = pos_.y;

	if (desc->cap & SANE_CAP_INACTIVE)
		EnableWindow(wnd, FALSE);
	ShowWindow(wnd, SW_SHOW);
	if (now)
		SendMessage(wnd, BM_SETCHECK, (WPARAM)BST_CHECKED, 0);

	return ret;
}
bool dlg_page::create_control_int(int sn, const SANE_Option_Descriptor* desc, void* cur_val)
{
	bool	ret = true;

	return ret;
}
bool dlg_page::create_control_float(int sn, const SANE_Option_Descriptor* desc, void* cur_val)
{
	bool	ret = true;

	return ret;
}
bool dlg_page::create_control_string(int sn, const SANE_Option_Descriptor* desc, void* cur_val)
{
	bool	ret = true;

	return ret;
}
bool dlg_page::create_control_button(int sn, const SANE_Option_Descriptor* desc, void* cur_val)
{
	bool	ret = true;

	return ret;
}

bool dlg_page::add_control(int sn, const SANE_Option_Descriptor* desc, void* cur_val)
{
	bool	ret = false;

	struct
	{
		int sane_type;
		bool(dlg_page::* func)(int, const SANE_Option_Descriptor*, void*);
	}creat[] = { {SANE_TYPE_BOOL, &dlg_page::create_control_bool}
				, {SANE_TYPE_INT, &dlg_page::create_control_int}
				, {SANE_TYPE_FIXED, &dlg_page::create_control_float}
				, {SANE_TYPE_STRING, &dlg_page::create_control_string}
				, {SANE_TYPE_BUTTON, &dlg_page::create_control_button}
	};
	for (int i = 0; i < _countof(creat); ++i)
	{
		if (creat[i].sane_type == desc->type)
		{
			ret = (this->*creat[i].func)(sn, desc, cur_val);
			break;
		}
	}

	return ret;
}
SIZE dlg_page::desired_size(void)
{
	return size_;
}
void dlg_page::show(void)
{
	ShowWindow(hwnd_, SW_SHOW);
}
void dlg_page::hide(void)
{
	ShowWindow(hwnd_, SW_HIDE);
}
const wchar_t* dlg_page::name(void)
{
	return name_.c_str();
}