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b8d0b19b2328358006548e5ee18ffe8146a365d7
amiga-stuff/requesters/filereq.c
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Wei-ju Wu b8d0b19b23 requesters: selection rectangle 
figured out a working formula for rendering the selection rectangle
2016-01-18 16:58:17 -08:00

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#include <string.h>
#include <intuition/intuition.h>
#include <dos/dosextens.h>
#include <clib/exec_protos.h>
#include <clib/intuition_protos.h>
#include <clib/graphics_protos.h>
#include <clib/dos_protos.h>
#include <clib/alib_stdio_protos.h>
#include "filereq.h"
#include "dos13.h"
#define BUTTON_HMARGIN 5
#define REQ_HMARGIN 10
#define REQ_VMARGIN 14
#define FILE_LIST_HMARGIN 5
#define FILE_LIST_VMARGIN 3
#define FILE_LIST_LINE_DIST 1
#define LIST_VSLIDER_WIDTH 11
#define LIST_BUTTON_WIDTH 11
#define LIST_BUTTON_HEIGHT 11
#define FILE_LIST_BM_MARGIN 1
#define NUM_FILE_ENTRIES 10
// some of these variables don't need to be static
static int filelist_width;
static int filelist_height;
static int filelist_bm_width;
static int filelist_bm_height;
static int select_index = 1;
enum { LABEL_DRAWER = 0, LABEL_FILE, LABEL_PARENT, LABEL_DRIVES, LABEL_OPEN, LABEL_CANCEL } Labels;
#define REQ_HEIGHT 175
#define REQWIN_HEIGHT (REQ_HEIGHT + 5)
#define TOPAZ_BASELINE 8
#define DRAWER_GADGET_X 60
#define DRAWER_GADGET_Y 106
#define FILE_GADGET_X DRAWER_GADGET_X
#define FILE_GADGET_Y (DRAWER_GADGET_Y + 17)
#define PATH_GADGET_WIDTH 160
#define PATH_GADGET_HEIGHT 10
#define STR_LABEL_XOFFSET -60
#define STR_LABEL_YOFFSET 2
#define BUTTON_Y (FILE_GADGET_Y + 18)
#define BUTTON_HEIGHT 18
#define BUTTON_TEXT_XOFFSET 5
#define BUTTON_TEXT_YOFFSET (TOPAZ_BASELINE - 3)
#define OK_BUTTON_X 0
#define OK_BUTTON_WIDTH 40
#define DRIVES_BUTTON_X 46
#define DRIVES_BUTTON_WIDTH 58
#define PARENT_BUTTON_X 110
#define PARENT_BUTTON_WIDTH 58
#define CANCEL_BUTTON_X 174
#define CANCEL_BUTTON_WIDTH 58
enum {
REQ_OK_BUTTON_ID = 101, REQ_DRIVES_BUTTON_ID, REQ_PARENT_BUTTON_ID,
REQ_CANCEL_BUTTON_ID, REQ_DIR_TEXT_ID, REQ_FILE_TEXT_ID, REQ_VSLIDER_ID,
REQ_UP_ID, REQ_DOWN_ID
} GadgetIDs;
static struct Requester requester;
static BOOL req_opened = FALSE;
static struct Window *req_window;
// if image data is in fast RAM, we see nothing !!!
static UWORD __chip up_imdata[] = { 65504, 32800, 32800, 32800, 33824, 36384, 39712, 32800,
32800, 32800, 65504 };
static struct Image up_image = { 0, 0, 11, 11, 1, up_imdata, 1, 0, NULL };
static UWORD __chip down_imdata[] = { 65504, 32800, 32800, 32800, 39712, 36384, 33824, 32800,
32800, 32800, 65504 };
static struct Image down_image = { 0, 0, 11, 11, 1, down_imdata, 1, 0, NULL };
static struct IntuiText labels[] = {
{1, 0, JAM2, STR_LABEL_XOFFSET, STR_LABEL_YOFFSET, NULL, "Drawer", NULL},
{1, 0, JAM2, STR_LABEL_XOFFSET, STR_LABEL_YOFFSET, NULL, "File", NULL},
{1, 0, JAM2, BUTTON_TEXT_XOFFSET, BUTTON_TEXT_YOFFSET, NULL, "Parent", NULL},
{1, 0, JAM2, BUTTON_TEXT_XOFFSET, BUTTON_TEXT_YOFFSET, NULL, "Drives", NULL},
{1, 0, JAM2, BUTTON_TEXT_XOFFSET, BUTTON_TEXT_YOFFSET, NULL, "Open", NULL},
{1, 0, JAM2, BUTTON_TEXT_XOFFSET, BUTTON_TEXT_YOFFSET, NULL, "Cancel", NULL}
};
static WORD ok_border_points[] = {0, 0, OK_BUTTON_WIDTH, 0, OK_BUTTON_WIDTH, BUTTON_HEIGHT, 0,
BUTTON_HEIGHT, 0, 0};
static WORD drives_border_points[] = {0, 0, DRIVES_BUTTON_WIDTH, 0, DRIVES_BUTTON_WIDTH,
BUTTON_HEIGHT, 0, BUTTON_HEIGHT, 0, 0};
static WORD cancel_border_points[] = {0, 0, CANCEL_BUTTON_WIDTH, 0, CANCEL_BUTTON_WIDTH,
BUTTON_HEIGHT, 0, BUTTON_HEIGHT, 0, 0};
static WORD list_border_points[10];
/* the -2 is the margin to set to avoid that the string gadget will overdraw the
borders */
static WORD string_border_points[] = {-2, -2, PATH_GADGET_WIDTH, -2, PATH_GADGET_WIDTH,
10, -2, 10, -2, -2};
static struct Border ok_button_border = {0, 0, 1, 0, JAM1, 5, ok_border_points, NULL};
static struct Border drives_button_border = {0, 0, 1, 0, JAM1, 5, cancel_border_points, NULL};
static struct Border parent_button_border = {0, 0, 1, 0, JAM1, 5, cancel_border_points, NULL};
static struct Border cancel_button_border = {0, 0, 1, 0, JAM1, 5, cancel_border_points, NULL};
static struct Border str_gadget_border = {0, 0, 1, 0, JAM1, 5, string_border_points, NULL};
static struct Border file_list_border = {0, 0, 1, 0, JAM1, 5, list_border_points, NULL};
static UBYTE buffer1[82], undobuffer1[82];
static struct StringInfo strinfo1 = {buffer1, undobuffer1, 0, 80, 0, 0, 0, 0, 0, 0, NULL, 0, NULL};
static UBYTE buffer2[82], undobuffer2[82];
static struct StringInfo strinfo2 = {buffer2, undobuffer2, 0, 80, 0, 0, 0, 0, 0, 0, NULL, 0, NULL};
static struct Image slider_image;
static struct PropInfo propinfo = {AUTOKNOB | FREEVERT, 0, 0, MAXBODY, MAXBODY,
0, 0, 0, 0, 0, 0};
#define WIN_TITLE "Open File..."
static struct NewWindow newwin = {
0, 0, 0, REQWIN_HEIGHT, 0, 1,
IDCMP_GADGETUP | IDCMP_MOUSEBUTTONS,
WFLG_CLOSEGADGET | WFLG_SMART_REFRESH | WFLG_ACTIVATE | WFLG_DRAGBAR | WFLG_DEPTHGADGET | WFLG_NOCAREREFRESH,
NULL, NULL, WIN_TITLE,
NULL, NULL,
0, REQWIN_HEIGHT,
0, REQWIN_HEIGHT,
WBENCHSCREEN
};
static struct Gadget list_down = {NULL, 0, 0,
LIST_BUTTON_WIDTH, LIST_BUTTON_HEIGHT,
GFLG_GADGHCOMP | GFLG_GADGIMAGE, GACT_RELVERIFY,
GTYP_BOOLGADGET | GTYP_REQGADGET,
&down_image, NULL,
NULL, 0, NULL,
REQ_DOWN_ID, NULL};
static struct Gadget list_up = {&list_down, 0, 0,
LIST_BUTTON_WIDTH, LIST_BUTTON_HEIGHT,
GFLG_GADGHCOMP | GFLG_GADGIMAGE, GACT_RELVERIFY,
GTYP_BOOLGADGET | GTYP_REQGADGET,
&up_image, NULL,
NULL, 0, NULL,
REQ_UP_ID, NULL};
static struct Gadget list_vslider = {&list_up, 0, 0, LIST_VSLIDER_WIDTH, 0,
GFLG_GADGHCOMP, GACT_RELVERIFY, GTYP_PROPGADGET,
&slider_image, NULL, NULL, 0, &propinfo,
REQ_VSLIDER_ID, NULL};
static struct Gadget file_text = {&list_vslider, FILE_GADGET_X, FILE_GADGET_Y,
PATH_GADGET_WIDTH, PATH_GADGET_HEIGHT,
GFLG_GADGHCOMP, GACT_RELVERIFY, GTYP_STRGADGET,
&str_gadget_border, NULL, &labels[LABEL_FILE], 0, &strinfo2,
REQ_FILE_TEXT_ID, NULL};
static struct Gadget dir_text = {&file_text, DRAWER_GADGET_X, DRAWER_GADGET_Y,
PATH_GADGET_WIDTH, PATH_GADGET_HEIGHT,
GFLG_GADGHCOMP, GACT_RELVERIFY, GTYP_STRGADGET,
&str_gadget_border,
NULL, &labels[LABEL_DRAWER], 0, &strinfo1,REQ_DIR_TEXT_ID, NULL};
// Note: Cancel does not specify the GACT_ENDGADGET flag, it seems that
// IDCMP_REQCLEAR is not fired when Intuition closes the requester automatically
static struct Gadget cancel_button = {&dir_text, CANCEL_BUTTON_X, BUTTON_Y, CANCEL_BUTTON_WIDTH,
BUTTON_HEIGHT, GFLG_GADGHCOMP, GACT_RELVERIFY,
GTYP_BOOLGADGET | GTYP_REQGADGET, &cancel_button_border, NULL,
&labels[LABEL_CANCEL], 0, NULL, REQ_CANCEL_BUTTON_ID, NULL};
static struct Gadget parent_button = {&cancel_button, PARENT_BUTTON_X, BUTTON_Y,
PARENT_BUTTON_WIDTH, BUTTON_HEIGHT,
GFLG_GADGHCOMP | GFLG_DISABLED, GACT_RELVERIFY,
GTYP_BOOLGADGET | GTYP_REQGADGET,
&parent_button_border, NULL,
&labels[LABEL_PARENT], 0, NULL,
REQ_PARENT_BUTTON_ID, NULL};
static struct Gadget drives_button = {&parent_button, DRIVES_BUTTON_X, BUTTON_Y,
DRIVES_BUTTON_WIDTH, BUTTON_HEIGHT,
GFLG_GADGHCOMP, GACT_RELVERIFY,
GTYP_BOOLGADGET | GTYP_REQGADGET,
&drives_button_border, NULL,
&labels[LABEL_DRIVES], 0, NULL,
REQ_DRIVES_BUTTON_ID, NULL};
static struct Gadget ok_button = {&drives_button, OK_BUTTON_X, BUTTON_Y,
OK_BUTTON_WIDTH, BUTTON_HEIGHT,
GFLG_GADGHCOMP, GACT_RELVERIFY,
GTYP_BOOLGADGET | GTYP_REQGADGET,
&ok_button_border, NULL,
&labels[LABEL_OPEN], 0, NULL,
REQ_OK_BUTTON_ID, NULL};
static int filelist_bm_depth = 1;
static struct BitMap filelist_bitmap;
static struct RastPort filelist_rastport;
#define PATHBUFFER_SIZE 200
static char dirname[PATHBUFFER_SIZE + 1];
static BPTR flock;
static LONG error;
static struct FileInfoBlock fileinfo;
static struct TextFont *reqwin_font;
static UWORD font_baseline, font_height;
static void print_fileinfo(struct FileInfoBlock *fileinfo)
{
if (fileinfo->fib_DirEntryType > 0) {
printf("dir: '%s'\n", fileinfo->fib_FileName);
} else {
printf("file: '%s'\n", fileinfo->fib_FileName);
}
}
static void close_requester()
{
if (req_opened) {
EndRequest(&requester, req_window);
req_opened = FALSE;
}
}
int file_index(int mx, int my) {
int x1 = REQ_HMARGIN;
int y1 = REQ_VMARGIN;
int x2 = x1 + filelist_width;
int y2 = y1 + filelist_height;
if (mx >= x1 && mx <= x2 && my >= y1 && my <= y2) {
int rely = my - y1;
printf("rely: %d\n", rely);
return 0;
}
return -1;
}
static void handle_events()
{
BOOL done = FALSE;
struct IntuiMessage *msg;
ULONG msgClass;
UWORD menuCode;
int buttonId;
while (!done) {
Wait(1 << req_window->UserPort->mp_SigBit);
if (msg = (struct IntuiMessage *) GetMsg(req_window->UserPort)) {
msgClass = msg->Class;
switch (msgClass) {
case IDCMP_MOUSEBUTTONS:
if (msg->Code == SELECTUP) {
WORD mx = msg->MouseX, my = msg->MouseY, file_i = file_index(mx, my);
if (file_i >= 0) {
// TODO
}
}
ReplyMsg((struct Message *) msg);
break;
case IDCMP_GADGETUP:
buttonId = (int) ((struct Gadget *) (msg->IAddress))->GadgetID;
ReplyMsg((struct Message *) msg);
if (buttonId == REQ_OK_BUTTON_ID) {
close_requester();
done = TRUE;
}
else if (buttonId == REQ_CANCEL_BUTTON_ID) {
close_requester();
done = TRUE;
}
break;
default:
break;
}
}
}
}
static void cleanup()
{
for (int i = 0; i < filelist_bm_depth; i++) {
if (filelist_bitmap.Planes[i]) FreeRaster(filelist_bitmap.Planes[i],
filelist_width,
filelist_height);
}
}
void draw_list()
{
struct FileListEntry *files = scan_dir(NULL), *cur;
// Note that we need to render into the requester
// layer's rastport, because it is rendered on top of the
// parent window and obscures the content
struct RastPort *src_rp = &filelist_rastport;
struct RastPort *dst_rp = requester.ReqLayer->rp;
// make sure drawing is clipped, otherwise it will
// draw somewhere else into memory
SetAPen(src_rp, 1);
int ypos = FILE_LIST_VMARGIN + font_baseline;
cur = files;
int count = 0;
while (cur && count < NUM_FILE_ENTRIES) {
Move(src_rp, 8, ypos);
Text(src_rp, cur->name, strlen(cur->name));
cur = cur->next;
ypos += font_height + FILE_LIST_LINE_DIST;
count++;
}
// Draw selection rectangle
SetDrMd(src_rp, COMPLEMENT);
int y1 = FILE_LIST_VMARGIN + select_index * (font_height + FILE_LIST_LINE_DIST) - 1;
int y2 = y1 + font_height;
RectFill(src_rp, 0, y1, filelist_bm_width, y2);
free_file_list(files);
// Done drawing, offscreen bitmap is rendered, copy to the requester's layer
ClipBlit(src_rp, 0, 0, dst_rp,
FILE_LIST_BM_MARGIN, FILE_LIST_BM_MARGIN, filelist_bm_width, filelist_bm_height,
0xc0);
}
/* Initialize the requester window and gadget sizes according to the current font and
screen resolutions. The window parameter is used to determine the font and the parent
window position.
*/
void init_sizes(struct Window *window, struct Requester *requester)
{
int scrw = window->WScreen->Width;
int scrh = window->WScreen->Height;
// Determine the requester's dimensions
filelist_bm_width = TextLength(window->RPort, "WWWWWWWWWWWWWWWWWWWWWWWWWWWWWW", 30) + 10;
filelist_width = filelist_bm_width + 2;
struct TextFont *font = window->IFont;
int font_height = font->tf_YSize;
int font_baseline = font->tf_Baseline;
filelist_bm_height = font_height * NUM_FILE_ENTRIES + 2 * FILE_LIST_VMARGIN +
(NUM_FILE_ENTRIES - 1) * FILE_LIST_LINE_DIST;
filelist_height = filelist_bm_height + (FILE_LIST_BM_MARGIN * 2);
// controls at the right of the list
int filelist_vslider_height = filelist_height - 2 * LIST_BUTTON_HEIGHT + 1;
int list_up_y = filelist_vslider_height;
int list_down_y = list_up_y + LIST_BUTTON_HEIGHT;
list_vslider.Height = filelist_vslider_height;
list_up.TopEdge = list_up_y;
list_down.TopEdge = list_down_y;
printf("Font ysize: %d, list height: %d\n", (int) font_height, filelist_height);
int buttonbar_width = TextLength(window->RPort, "OpenDrivesParentCancel", 22)
+ (BUTTON_HMARGIN * 2 * 4);
int req_width = filelist_width > buttonbar_width ? filelist_width : buttonbar_width;
printf("filelist width: %d, button bar width: %d, req_width: %d\n", filelist_width,
buttonbar_width, req_width);
req_width += LIST_VSLIDER_WIDTH;
newwin.MinWidth = newwin.MaxWidth = newwin.Width = req_width + 2 * REQ_HMARGIN;
// position the requester relative to the parent window
// TODO: respect screen size
newwin.LeftEdge = window->LeftEdge + 10;
newwin.TopEdge = window->TopEdge + 10;
// adjust border
list_border_points[2] = filelist_width;
list_border_points[4] = filelist_width;
list_border_points[5] = filelist_height;
list_border_points[7] = filelist_height;
// adjust gadgets
list_down.LeftEdge = filelist_width;
list_up.LeftEdge = filelist_width;
list_vslider.LeftEdge = filelist_width;
requester->Width = req_width;
requester->LeftEdge = REQ_HMARGIN;
requester->TopEdge = REQ_VMARGIN;
requester->Height = REQ_HEIGHT;
requester->Flags = SIMPLEREQ | NOREQBACKFILL | NOISYREQ;
requester->BackFill = 0;
requester->ReqGadget = &ok_button;
requester->ReqBorder = &file_list_border;
requester->ReqText = NULL;
}
void open_file(struct Window *window)
{
BOOL result;
InitRequester(&requester);
init_sizes(window, &requester);
if (req_window = OpenWindow(&newwin)) {
reqwin_font = req_window->IFont;
font_height = reqwin_font->tf_YSize;
font_baseline = reqwin_font->tf_Baseline;
printf("Font ysize: %d, baseline: %d\n", (int) font_height, (int) font_baseline);
// TODO: we are scrolling by whole lines, this way we can avoid
// corrupting memory by drawing over the offline bitmap memory
// we copy the previous content a line up/down and insert the new line
InitBitMap(&filelist_bitmap, filelist_bm_depth, filelist_bm_width, filelist_bm_height);
for (int i = 0; i < filelist_bm_depth; i++) filelist_bitmap.Planes[i] = NULL;
for (int i = 0; i < filelist_bm_depth; i++) {
if (!(filelist_bitmap.Planes[i] = AllocRaster(filelist_width, filelist_height))) {
cleanup();
return;
} else {
BltClear(filelist_bitmap.Planes[i],
RASSIZE(filelist_width, filelist_height), 1);
}
}
InitRastPort(&filelist_rastport);
filelist_rastport.BitMap = &filelist_bitmap;
if (req_opened = Request(&requester, req_window)) {
draw_list();
handle_events();
CloseWindow(req_window);
req_window = NULL;
} else {
puts("Request() failed !!!");
}
cleanup();
} else {
puts("OpenWindow() failed !!!");
}
}
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