MacHack 2001/MacHack 2001.toast/pc/The Hacks/Palm Finder 2/Src/Panes/icon.cpp

Text File | 2001-06-23 | 4.3 KB | 241 lines

// icon.cpp

// includes
#define PILOT_PRECOMPILED_HEADERS_OFF
#include <Pilot.h>
#include "app_constants.h"
#include "icon.h"
#include "drawing.h"
#include "events.h"

// constants
const int    name_margins = 2;

//
// constructor
//
icon::icon(int in_bitmapID, int in_maskID, const char* in_name, int x, int y, view* in_superview):
    pane(in_superview), commander()
{
    m_bitmapID = in_bitmapID;
    m_maskID = in_maskID;
    StrCopy (m_name, in_name);
    m_x = x;
    m_y = y;
    m_selected = false;

    recalculate_rect();
}

//
// destructor
//
icon::~icon() {
}

//
//  get_position
//
void
icon::get_position (int& x, int& y) {
    x = m_x;
    y = m_y;
}

//
//  select
//
void
icon::select() {
    m_selected = true;
    draw_self();
}

//
//  deselect
//
void
icon::deselect() {
    m_selected = false;
    draw_self();
}

void
icon::set_icon (int in_bitmapID, int in_maskID, Boolean in_redraw) {
    m_bitmapID = in_bitmapID;
    m_maskID = in_maskID;
    if (in_redraw)
        draw_self();
}

//
// do_command
//
Boolean
icon::do_cmd_self (int in_eventID, void* io_data) {
    Boolean    handled = false;
    icon*        iconP = (icon*) io_data;

    switch (in_eventID) {
        case evt_deselect_icons:
            if (iconP != this)
                deselect();
            break;
        default:
            break;
    }

    return handled;
}

#pragma mark -

//
//  get_name_rect
//
void
icon::get_name_rect ( RectangleType* r ) {
    unsigned short length = StrLen(m_name);
    int             width = FntCharsWidth(m_name, length) + name_margins*2;
    int             height = FntLineHeight();
    int            top = m_y;
    int            left = m_x - width/2;

    r->topLeft.x = left;
    r->topLeft.y = top;
    r->extent.x = width;
    r->extent.y = height;
}

//
//  get_bitmap_rect
//
void
icon::get_bitmap_rect ( RectangleType* r ) {
    int height, width;

    get_bitmap_dimensions(m_bitmapID, height, width);
    r->topLeft.x = m_x - width/2;
    r->topLeft.y = m_y - height;
    r->extent.x = width;
    r->extent.y = height;
}

//
// recalculate_rect()
//
void
icon::recalculate_rect() {
    RectangleType        name_r;
    int                    bitmap_height, bitmap_width;

    get_name_rect(&name_r);
    get_bitmap_dimensions(m_bitmapID, bitmap_height, bitmap_width);

    int    top = m_y - bitmap_height;
    int    height = bitmap_height + name_r.extent.y;

    int    width;
    if (name_r.extent.x > bitmap_width) {
        // use name's width
        width = name_r.extent.x;
    } else {
        // use bitmap's width
        width = bitmap_width;
    }

    int    left = m_x - width/2;

    m_bounds.topLeft.x = left;
    m_bounds.topLeft.y = top;
    m_bounds.extent.x = width;
    m_bounds.extent.y = height;
}

//
// draw_self()
//
void
icon::draw_self() {
    RectangleType    bitmap_r;
    RectangleType    name_r;

    // draw icon
    get_bitmap_rect(&bitmap_r);
    draw_bitmap_masked (m_bitmapID, m_maskID, m_x, m_y, center_align, bottom_align);

    // draw name
    get_name_rect(&name_r);
    WinEraseRectangle(&name_r, 0);
    FntSetFont (stdFont);
    WinSetUnderlineMode (noUnderline);
    draw_string (m_name, m_x, m_y, center_align, top_align);

    // draw hilite
    if (m_selected) {
        draw_bitmap(m_maskID, m_x, m_y, center_align, bottom_align, scrXOR);
        WinInvertRectangle(&name_r, 0);
    }
}


//
// click_self()
//
Boolean
icon::click_self(int x, int y) {
    Boolean            handled = false;
    Boolean            pen_down;
    short                new_x, new_y, d_x, d_y;
    short                old_x = x;
    short                old_y = y;
    WinHandle        old_bits = NULL;
    unsigned short err;

    // check icon click
    RectangleType        r;
    get_bitmap_rect(&r);
    if (RctPtInRectangle(x, y, &r))
        handled = true;

    // check text click
    get_name_rect(&r);
    if (RctPtInRectangle(x, y, &r))
        handled = true;

    // if handled, move icon
    if (handled == true) {
        // should deselect other icons
        commander::dispatch_command (evt_deselect_icons, this);
        select();
        EvtGetPen ( &new_x, &new_y, &pen_down );
        while (pen_down==true) {
            if ( (new_x != old_x) || (new_y != old_y) ) {
                // constrain to screen
                constrain_to_screen (new_x, new_y);

                d_x = new_x - old_x;
                d_y = new_y - old_y;
                old_x = new_x;
                old_y = new_y;

                m_x = m_x + d_x;
                m_y = m_y + d_y;

                if (old_bits!=NULL)
                    WinRestoreBits(old_bits, m_bounds.topLeft.x, m_bounds.topLeft.y);
                recalculate_rect();
                old_bits = WinSaveBits(&m_bounds, &err);
                draw_self();
            }
            EvtGetPen ( &new_x, &new_y, &pen_down );
        }
        if (old_bits!=NULL)
            WinRestoreBits(old_bits, m_bounds.topLeft.x, m_bounds.topLeft.y);
        send_update_event();
    }

    // return false so other icons can deselect?
    return handled;
}